I bought my 1991 in 2006 with 10k miles for 38500, sold her in 2007 with 17k miles for 42500 on eBay.
Bought her back again last year with 32k miles for 35k. I did the major maintenance items a couple of weeks ago and I am listing her for sale again with 35k miles.
No idea what the value is as I don't see too many coupes with super low miles so I'm asking 49k OBO. I'll probably not get that (not on Prime, but eBay maybe), but I'm in no rush to sell anyway. I'm eying an NA2 btw.