i've been watching xpan auctions on ebay with a close eye
depending on the condition, $1000 is probably a very good price, keh has the 45mm for a reasonable price
very good condition models usually go for $1800 and up edit: with the lens
seems like all xpan's weren't painted well; that or they were abused and have all kinds paintloss. some people like that on their rf's but not me.