I have a HUGE Dicemasters collection. I'm probably missing about 25 cards total between all the sets.

These sets are complete....

Avengers vs X-Men
Uncanny X-Men
Age of Ultron
Justice League
War of Light
D&D Battle for Faerun

Mostly complete sets...
Amazing Spiderman(missing one rare, and 3 super rares(missing zombie Moribus, zombie venom, hulk)
Worlds Finest(missing 6 rares, and 3 super rares(lex luthor, zombie firestorm, zombie anti-monitor)
D&D Faerun Under Siege(missing 6 rares and 4 super rares(talismen of ultimate evil, hammer of thunderbolts, deck of many things, beholder)
Yu-fi-oh(missing 5 rares but the good ones are there like blue eyes and jinzo, all the super rares are there)

It's a massive collection. All the dice have 4 dice, and I have a ton of promo stuff. I would be looking for 1000 shipped for the lot. I would be up for some bartering though too! I might also be interested in a xwing collection. Not to interested in Imperial ships but I am interested in Rebels of Scum. I would also take some HC in trade but would mostly be interested in Modern meta pieces, KC Chases, and AoA chases. These could be used to supplement the hefty price tag.

you might find more success selling it set-by-set on the "Bay of E".

most current players only need a few SR/Chase cards and have plenty of CUR already.

Good luck!

Yeah trying other methods first before resorting to that place.