The market has been pretty soft as of late, but you have some nice minis in that selection.
The BR Abominations box is always in demand (I know I'm still looking for one), and I'm guessing it could go for around $35-50 on the low end, maybe as high as $80-100 if some deep-pocket collectors get into a bidding war.
The Pit Fiend and Manxan always do well. I'd say $20-30 low and $70-80 high for those individual minis.
The fire giant could fetch $15 to $45. Always nice to get one complete (with the shoulder spikes that are commonly missing from loose models).
The rest are fairly hit or miss. You could ask $5-10, but it's hard to say which ones might command $20+ on any given day.
Good luck with those, and make sure you post a note in the Classifieds forum if you decide to go ahead and sell
Oh, and if you do eBay them, don't be shocked if more than one person offers to buy all your 11-series listings in a package deal. There are a couple of notorious 11-series resellers on eBay who have hit me up in the past when I have listed models from the 11-series.