I sold almost all of mine over the last 6ish months. I mostly did individual figures. I sold on Mercari and I found that for most figures I could get anywhere from $7-$13 per fig. There are a few that can get more that had high interest (a lot of them seemed kinda random in their popularity), around $12-$20 each. BAF's can get you more, low end around $25, the highest I got was for Chemo I think, in the $90's.  For all of these, in my experience, even for the more popular ones, could take awhile to move. I had a Green Lantern Abin Sur listed for almost two months before it sold for $8.  I was ok with that as it seems for a certain percentage of people getting DCUC in the aftermarket, aren't searching all the time, so it's a matter of waiting around for the right set of eyes to look.  I would also suggest listing several at a time, as sometimes if someone see's one figure they know they want but another they where on the fence on, they may make you an offer for both for a slight discount.

I kinda hurt getting rid of them, but I need space, and I figured I got their value out of them as it's been what, 17ish years since that line started?

I havent sold mine, but I wonder if the later ones (from Matty Collector, especially the subscriber exclusives) are worth more