I can only echo Darryl's advice. Low starting bids and the market will set its own price, which will be substantial.
I know it seems counter-intuitive, but you'll generally get the best prices with low starting bids. Trust me, they won't end low

I would have suggested just letting the auctions run as they were, however if you're looking for top dollar, I'd agree with Darryl again about listing the figures individually.
So far as values is concerned, it's so difficult to gauge, but I suspect the blue Jotuns, green T Rex and orange Hydras will be the least valuable, simply because many of us already have those particular figures. Another seller sold a bunch of those which they also got from a Jersey arcade.
However, the others are very uncommon, and I can't see a way in which they fetch less than $100 each; people pay that kind of money for cereal premiums, which are much more common.
Edited by Strontium Dog, 17 July 2013 - 03:36 PM.