.shop sells quite well, but as it is new gTLD, one should focus on really good english keywords, if possible, without prefixes..
as in your case you can also have ourcheap, yourcheap, usacheap, globalcheap, bestcheap, acheap, thecheap, supercheap, etc, etc..this is almost impossible to resell at the moment.
I would say though that if prefixes, one should go for THE, E, I or MY, as applicable, but every prefix means 10% of sale value in comparison to no prefix