Sup bros. Can anyone help me out? Like 3 years ago I bought this Mogwai record. Colored vinyl. One red and one grey.

I recently decided to get rid of all my record collection and made craigslist and facebook posts listing what I had to see if anyone wanted it. Finally someone told me they wanted the Mogwai record. So I started searching the price for a new one so I could determine a fair price, and I found out that only 2500 copies were made. I found some being sold on Amazon for up to $170. But I also found some on discogs for $15

What the fuck is going on? Is it worth money or not?

http://www.discogs.com/sell/release/4044041?ev=rb

http://www.amazon.com/Wrenched-Virile-Lore-Limited-Colored/dp/B00AC5BVXS