People are only really collecting the 1st year's variants MOC- not the .00 number variants, but the legitimate differences like long/short saber, 1/2 circle/full circle boba fett... As usual with collecting, it's trends. So many people thought these were going to be worth tons of money, and bought a lot of them thinking "this will pay for a new car someday!"
These were following the Toy Biz X-Men line's lead with the cardback number variants, now these type of things are of no real interest,
Good luck selling them, Tamer, your best bet is to use them for customs, or put them all in a big box in your basement and wait until 2016, when they become "nostalgia" for 90's kids in their 20's and they'll pay for a decent amount for them. Sell them now, you'll be lucky to get 25 cents a figure.
I've been collecting Star Wars since 1994, and seen many ebbs and flows in collecting... I've noticed that many of the art vinyl toy collectors and customizers in that scene have had a renewed interest in POTF2 over the last 1-2yrs.
The general rule of thumb with this type of thing is,
How many toys were made?
How many people thought they were going to be worth money?
Since the answer to both questions in this case is "A Lot" I would say that while interest might come back, the prices never will.
Take a look at some of the values of 90's toys like Transformers, or Power Rangers Zords... these were lines collectors couldn't have cared less about in the early 90's, and their MISB values are much more than most SW items from the same era (remember, kids bought these, collectors didn't care about these, we were all buying $40 Monkey Leias!)
Me, I've already had & sold complete sets of the vintage Kenner & POTF2 lines before POTJ hit, so my interest is more in 2004-current stuff.