it’s a bootleg. i haven’t heard it myself, but it is supposed to be bad quality. all these songs are available online, in better quality.
if you want one nevertheless, i’d suggest you look around a bit. you can definitely find it for less than Â£35/$55. it’s everywhere, including record stores and ebay, and it usually costs less than half of that amount. (example, although this still is fairly expensive: http://www.auralexploits.com/product_6754.htm)