I found the list below after searching around a bit. Most are Audible, but a few are on archive.org as well. You may want to check out archive for other old stuff, too.
Maybe check out https://librivox.org/ too.
Another is this list of free audiobooks from Appendix N.
I also found this playlist on YouTube.
Have fun listening! And I hope your situation changes for the better very soon. We will be here waiting. 🙂
Anderson, Poul Poul Anderson Three Hearts and Three Lions https://www.audible.com/pd/Three-Hearts-and-Three-Lions-Audiobook/B004TBQM62 https://archive.org/details/threeheartsthree00poul
Anderson, Poul Poul Anderson The Broken Sword https://www.audible.com/pd/The-Broken-Sword-Audiobook/B004XDWD5U https://archive.org/details/brokensword0000ande
Bellairs, John John Bellairs The Face in the Frost https://www.audible.com/pd/The-Face-in-the-Frost-Audiobook/1977345093 https://archive.org/details/faceinfrost00bell
Brackett, Leigh Leigh Brackett Black Amazon of Mars https://www.audible.com/pd/Black-Amazon-of-Mars-Audiobook/B00L3J9J86
Brackett, Leigh Leigh Brackett The best of Leigh Brackett https://archive.org/details/bestofleighbrack00brac
Brown, Frederic Fredric Brown The best of Fredric Brown https://archive.org/details/bestoffredricbro00brow
Brown, Frederic Fredric Brown Honeymoon in Hell https://www.audible.com/pd/Honeymoon-in-Hell-Audiobook/B00IORVNSE
Brown, Frederic Fredric Brown Nightmares and Geezenstacks https://www.audible.com/pd/Nightmares-and-Geezenstacks-Audiobook/B06XT934NP
Burroughs, Edgar Rice Edgar Rice Burroughs At the Earth's Core https://www.audible.com/pd/At-the-Earths-Core-Audiobook/B09RGCP278
Burroughs, Edgar Rice Edgar Rice Burroughs Pellucidar https://www.audible.com/pd/Pellucidar-Audiobook/B09RGQ5MXY
Burroughs, Edgar Rice Edgar Rice Burroughs Barsoom Series Collection: 7 John Carter Stories https://www.audible.com/pd/Barsoom-Series-Collection-7-John-Carter-Stories-Audiobook/B01C7PCUOO
Carter, Lin Lin Carter The Warrior of World's End https://www.audible.com/pd/The-Warrior-of-Worlds-End-Audiobook/B006JS84I2 https://archive.org/details/warriorofworldse00cart
Carter, Lin Lin Carter Enchantress of World's End https://www.audible.com/pd/Enchantress-of-Worlds-End-Audiobook/B007KBQSSU
Carter, Lin Lin Carter The Immortal of World's End https://www.audible.com/pd/The-Immortal-of-Worlds-End-Audiobook/B00C5RIEDQ
Carter, Lin Lin Carter The Barbarian of World's End https://www.audible.com/pd/The-Barbarian-of-Worlds-End-Audiobook/B00CULRVC2
Carter, Lin Lin Carter The Pirate of World's End https://www.audible.com/pd/The-Pirate-of-Worlds-End-Audiobook/B00EAPN2P6
de Camp & Pratt L. Sprague de Camp & Fletcher Pratt The Compleat Enchanter: The Magical Misadventures of Harold Shea https://books.apple.com/us/audiobook/the-compleat-enchanter-the-magical-misadventures/id623846824 https://archive.org/details/compleatenchante00deca
de Camp, L. Sprague L. Sprague de Camp The Fallible Fiend https://books.apple.com/us/audiobook/the-fallible-fiend-unabridged/id610917250 https://archive.org/details/falliblefiend0000deca
Derleth, August August Derleth
Dunsany, Lord Lord Dunsany The Dunsany Mythos - The Gods of Pegāna and Time and the Gods https://www.audible.com/pd/The-Dunsany-Mythos-Audiobook/1665062533
Dunsany, Lord Lord Dunsany The King of Elfland's Daughter https://www.audible.com/pd/The-King-of-Elflands-Daughter-Audiobook/1518909981
Farmer, P. J. Philip José Farmer The Maker of Universes https://archive.org/details/makerofuniverses00farm
Farmer, P. J. Philip José Farmer The Gates of Creation https://archive.org/details/gatesofcreation0000farm
Farmer, P. J. Philip José Farmer A Private Cosmos https://archive.org/details/privatecosmos00phil
Farmer, P. J. Philip José Farmer Behind the Walls of Terra https://archive.org/details/behindwallsofter00farm
Farmer, P. J. Philip José Farmer The Lavalite World https://archive.org/details/lavaliteworld00farm
Fox, Gardner Gardner Francis Fox Kothar: Barbarian Swordsman https://archive.org/details/gardner-f.-fox-novels/Gardner%20F.%20Fox%20-%20Kothar%2001%20-%20Kothar%20Barbarian%20Swordsman/
Fox, Gardner Gardner Francis Fox Kothar of the Magic Sword! https://archive.org/details/gardner-f.-fox-novels/Gardner%20F.%20Fox%20-%20Kothar%2002%20-%20Kothar%20of%20The%20Magic/
Fox, Gardner Gardner Francis Fox Kothar and the Demon Queen https://archive.org/details/gardner-f.-fox-novels/Gardner%20F.%20Fox%20-%20Kothar%2003%20-%20Kothar%20and%20The%20Demon%20Queen/
Fox, Gardner Gardner Francis Fox Kothar and the Conjurer's Curse https://archive.org/details/gardner-f.-fox-novels/Gardner%20F.%20Fox%20-%20Kothar%2004%20-%20Kothar%20and%20The%20Conjurer%27s%20Curse/
Fox, Gardner Gardner Francis Fox Kothar and the Wizard Slayer https://archive.org/details/gardner-f.-fox-novels/Gardner%20F.%20Fox%20-%20Kothar%2005%20-%20Kothar%20and%20the%20Wizard%20Slayer/
Fox, Gardner Gardner Francis Fox Kyrik: Warlock Warrior https://archive.org/details/gardner-f.-fox-novels/Gardner%20F.%20Fox%20-%20Kyrik%2001%20-%20Warlock%20Warrior/
Fox, Gardner Gardner Francis Fox Kyrik Fights the Demon World https://archive.org/details/gardner-f.-fox-novels/Gardner%20F.%20Fox%20-%20Kyrik%2002%20-%20Fights%20the%20Demon%20World/
Fox, Gardner Gardner Francis Fox Kyrik and the Wizard's Sword https://archive.org/details/gardner-f.-fox-novels/Gardner%20F.%20Fox%20-%20Kyrik%2003%20-%20Kyrik%20%26%20the%20Wizard%27s%20Sword/
Fox, Gardner Gardner Francis Fox Kyrik and the Lost Queen https://archive.org/details/gardner-f.-fox-novels/Gardner%20F.%20Fox%20-%20Kyrik%2004%20-%20Kyrik%20and%20the%20Lost%20Queen/
Howard, R. E. Robert E. Howard Robert E. Howard's Conan the Cimmerian Barbarian The Complete Weird Tales Omnibus https://www.audible.com/pd/Robert-E-Howards-Conan-the-Cimmerian-Barbarian-Audiobook/B0733QJ65L
Lanier, Sterling Sterling E. Lanier Hiero's Journey https://archive.org/details/hierosjourney00ster
Lanier, Sterling Sterling E. Lanier The Unforsaken Hiero https://archive.org/details/unforsakenhiero00ster
Leiber, Fritz Fritz Leiber Swords and Deviltry https://www.audible.com/pd/Swords-and-Deviltry-Audiobook/B002VA9GLG
Leiber, Fritz Fritz Leiber Swords Against Death https://www.audible.com/pd/Swords-Against-Death-Audiobook/B002V0LZAQ
Leiber, Fritz Fritz Leiber Swords in the Mist https://www.audible.com/pd/Swords-in-the-Mist-Audiobook/B002V1NRCE
Leiber, Fritz Fritz Leiber Swords Against Wizardry https://www.audible.com/pd/Swords-Against-Wizardry-Audiobook/B002VAEK30
Leiber, Fritz Fritz Leiber The Swords of Lankhmar https://www.audible.com/pd/The-Swords-of-Lankhmar-Audiobook/B002V0RDHK
Leiber, Fritz Fritz Leiber Swords and Ice Magic https://www.audible.com/pd/Swords-and-Ice-Magic-Audiobook/B002V8MXZO
Leiber, Fritz Fritz Leiber The Knight and Knave of Swords https://www.audible.com/pd/The-Knight-and-Knave-of-Swords-Audiobook/B002VA9GRA
Lovecraft, H. P. H.P. Lovecraft H.P. Lovecraft: The Complete Omnibus Collection, Volume I: 1917-1926 https://www.audible.com/pd/HP-Lovecraft-The-Complete-Omnibus-Collection-Volume-I-1917-1926-Audiobook/B01JK2ZWO2
Lovecraft, H. P. H.P. Lovecraft H.P. Lovecraft, The Complete Omnibus, Volume II: 1927-1935 https://www.audible.com/pd/HP-Lovecraft-The-Complete-Omnibus-Volume-II-1927-1935-Audiobook/B01BDFUZ6Y
Merritt, A. Abraham Merritt The Moon Pool https://www.audible.com/pd/The-Moon-Pool-Audiobook/B00HQ1U074
Merritt, A. Abraham Merritt Dwellers in the Mirage https://www.audible.com/pd/Dwellers-in-the-Mirage-Audiobook/164555404X
Moorcock, Michael: Michael Moorcock Elric of Melniboné https://www.audible.com/pd/Elric-of-Melnibone-Audiobook/1705028594
Norton, Andre Andre Norton Witch World https://www.audible.com/pd/Witch-World-Audiobook/B0035B9CLY
Norton, Andre Andre Norton Web of the Witch World https://www.audible.com/pd/Web-of-the-Witch-World-Audiobook/B003BAC202
Norton, Andre Andre Norton Year of the Unicorn https://www.audible.com/pd/Year-of-the-Unicorn-Audiobook/B003E85UJ6
Offutt, Andrew J. Andrew J. Offutt Swords Against Darkness III https://archive.org/details/swordsagainstdar0000andr_m8b1
Pratt, Fletcher Fletcher Pratt The Blue Star https://archive.org/details/bluestar_1811_librivox https://archive.org/details/thebluestar56889gut
Saberhagen, Fred Fred Saberhagen Empire of the East https://www.audible.com/pd/Empire-of-the-East-Audiobook/B002V59ZZ8
St. Clair, Margaret Margaret St. Clair Sign of the Labrys
St. Clair, Margaret Margaret St. Clair The Shadow People
Tolkien, J. R. R. J. R. R. Tolkien The Hobbit https://www.audible.com/pd/The-Hobbit-Audiobook/1705009050
Tolkien, J. R. R. J. R. R. Tolkien The Fellowship of the Ring https://www.audible.com/pd/The-Fellowship-of-the-Ring-Audiobook/1705047572
Tolkien, J. R. R. J. R. R. Tolkien The Two Towers https://www.audible.com/pd/The-Two-Towers-Audiobook/B009ABHTF4
Tolkien, J. R. R. J. R. R. Tolkien The Return of the King https://www.audible.com/pd/The-Return-of-the-King-Audiobook/1705047599
Vance, Jack Jack Vance The Dying Earth https://www.audible.com/pd/The-Dying-Earth-Audiobook/B0035BBLF4
Vance, Jack Jack Vance The Eyes of the Overworld https://www.audible.com/pd/The-Eyes-of-the-Overworld-Audiobook/B00391OEKY
Vance, Jack Jack Vance Cugel's Saga https://www.audible.com/pd/Cugels-Saga-Audiobook/B003E85RBC
Vance, Jack Jack Vance Rhialto the Marvellous https://www.audible.com/pd/Rhialto-the-Marvellous-Audiobook/B003HUBWUM
Weinbaum, Stanley
Wellman, Manley Wade Manly Wade Wellman The Old Gods Waken https://www.audible.com/pd/The-Old-Gods-Waken-Audiobook/B00OZ7WEQC
Williamson, Jack
Zelazny, Roger Roger Zelazny Nine Princes in Amber https://www.audible.com/pd/Nine-Princes-in-Amber-Audiobook/B008OJIQMI
Zelazny, Roger Roger Zelazny The Guns of Avalon https://www.audible.com/pd/The-Guns-of-Avalon-Audiobook/B008PY0SB4
Zelazny, Roger Roger Zelazny Sign of the Unicorn https://www.audible.com/pd/Sign-of-the-Unicorn-Audiobook/B008QXXCYE
Zelazny, Roger Roger Zelazny The Hand of Oberon https://www.audible.com/pd/The-Hand-of-Oberon-Audiobook/B008PY0TYU
Zelazny, Roger Roger Zelazny The Courts of Chaos https://www.audible.com/pd/The-Courts-of-Chaos-Audiobook/B008PY0RKQ
