Currently available sets decreasing in value?

aladar · 2016-08-09T02:51:15.000Z

I'm pretty new at this and I'm trying to understand, why have certain current sets decreased in value over the past year? And is this indicative of their future, post-retirement performance? I know they're not going to increase while they're still available, but some of them seem to have dropped quite a bit. E.g. http://www.brickpicker.com/bpms/set.cfm?set=75094-1 http://www.brickpicker.com/bpms/set.cfm?set=75102-1