Nothing new came on. One price moved: the C-85-12F at 394 SMOH in Phoenix, AZ went from $13,750 to $14,750. Two left the market: the C-85-12F at 388 SMOH in Phoenix, AZ (the seller turned that eBay listing into an oxygen bottle at $450) and the C85 crankshaft with IA sign-off from the Small continental engines Facebook group (post no longer available).
Sources checked Oct 31, 7:08 AM Central: Trade-A-Plane, Barnstormers, eBay, Controller, BAS Part Sales (formerly Wentworth), Craigslist (21 centres, 500 mi), Facebook Marketplace (14 stops, 40 mi), Facebook groups (12 picked by Rusty). Not reachable this run: AircraftForSale and GlobalAir (bot check on AircraftForSale search; GlobalAir has no engines section; not clicked through).
A part is listed only when its ad says it is for, or fits, a C-85 or a C-90. Each ad's own words are shown; nothing is inferred. Nothing here is this site's opinion.