I've gone through a few vague personal names like these. Some sell, most don't, even when I email every end user I can find with the name.
Both of these are kind of neat but not particularly exciting, at least to me. As a reseller I'd pay maybe $15 or 20 apiece max, if I really wanted one of them, so that's my reseller appraisal. For end users, it's a crapshoot and you never know what will sell. If I found an interested end user for one of these names, I'd probably ask $225 for each, but settle for as low as $75 if I had the offer.
Good luck. I do like Nimpy, kind of cute and sounds like a cuddly toy.