To a degree, sure. But that's with everything in the RA realm. I'm gated, and there's no area CL or FB marketplace, so nearly all my sales are on BL or eBay. For me, that means my buy in has to be 75% or greater for most sets. But for those of you who have access to FBA, even if your buy in was at RRP for recent retired sets, like 21133, 21132, 21126, 21125 the current price is double or nearly 3x for those sets, nationally.
I don't buy that Minecraft is a secret, certainly not on this site, LOL. We talk broadly about odd sale trends with so many minor themes, from Juniors, Elves, DC Girls Super Heroes, etc. I'm guessing the niche market for this theme of 7-15 boys and that keeps it from gaining much attention outside of that audience. I seriously don't get what makes it cool or hot and I make a genuine attempt to try to have at least some idea of why a product I'm selling is that way.