Marvel Legends Prices

I hope I don't come across as too noobish but I'm considering offloading my Sealed Marvel Legends (Just a few, not many) I've found a few prices for a couple of them on ebay but I"m not sure if they're realistic so.... I have the following. Just for clarification's sake, they're all the old Toy Biz ones.
Electra Series 4 (Foil Poster variant)
Cable Series 6 (Brown variant)
Mystique (Sentinel Series)
Taskmaster and Ultron (Legendary Riders Series)

Not much in the way of money makers there, perhaps $20-$30 each...?

Thanks for that Bigfella, I was getting a little excited when I saw a bloke trying to flog Cable off for $90