not bad bro. I take it this was the last good ext, it was registered in.
I say Mid XX, just due to the ext. I dont see much potential other
than developing and getting it high in SE rankings or locating an end-user
with like domains or subject and offering it for sale as an addition to
their own site. Plus MarbleCountertops on it's own is pretty long as a
name which/could reduce traffic (or typo) easily. Very rarely will you see a
typo of a .biz site. So a mid XX appraisal is possibly this domains highest
appraisal however.