Popeye is hit an miss. Some folks value one at a mere $250, others think it has a value of around $400.
SNES Super System is a very 'neat' cabinet, but playing the same small library of games gets stale after a while and only makes you wish you were sitting down on the couch to play it. I'd say $250 tops. Of course, I don't think I'd ever pay more than $150 for one.