I got this game right before new years day for $8 from my local thrift store. I knew it was a good game but I never checked how rare it was or how much it sold for.

Well I was just going to start playing it but I decided to look it up on ebay out of curiosity and I was shocked to see that it's selling for $58-$95 so then I immediately looked it up in the online rarity guide here on dp and it says that it's a R3 and a complete copy should sell for $18.

So what's going on here? is it a case of high demand driving up prices or is the guide wrong and it's really higher than an R3 and should sell for more than $18 or are they both wrong and it should be somewhere in between! i'm so confused.