As a printmaker I generate A LOT of proofs and test prints. Over time I accumulate draws full of experiments, colour testing, ones with mucky finger prints on, meaning they don't make it to the final edition. They sit in draws until I decide to do a lucky dip sale! 
 
£75 will get you a medium size randomly selected print, it could be an etching or it could be a lithograph. It might be of a ruin or a landscape - it will be a surprise!