Shit, those are awesome. I found the large stairs on clearance at K-Mart like a year or 2 ago, and almost got 2 sets for $12 each, but I passed because "I don't do dios". I really wish I'd gotten them.
I'll have to check out a few Targets near me. They usually only have lame stuff, like the miniature dirt bikes or skateboards that I'd never use.