Lunar 1 & 2 (PS1) Strategy guides going price?

[Richter]

Have these two guides from the PS1 release and looking to get rid of them. What's the going rate on these two? Both books still have the stickers intact.

 

[mission42]

By checking completed listings on Ebay it looks like each go for about $10-$15 and a Lunar 2 Hardcover guide had sold for like $50+