That'd be a waste of money though, w00t.
Annoyingly, I haven't bought a single Chima set this year. Behind Superheroes, it's probably my favourite current theme (let the hate begin). I've even played the video game, and love every second of it (except the sewer level in Rhino Quarry, egh).
So in answer to your question, you could donate them all to the Rizzo Mainframe...? jkz
BTW there's a toy store near me that still has the Serpentine from whatever year they came out. It's those spinners, and they reduced them to £7.50 from £10. They've been on that rack since they came out, and nobody's bought them, but the store's still trying to shift 'em. So perseverance, I guess. Maybe put up some Chima posters and publicise the sale a bit more? Which sets specifically aren't selling, because Speedorz would work great for a 'buy one get one half price'. You could also do the same, but with a larger set/small set combo. Buy one of the £20/£30 sets (don't know what that's like in dollars) and get half off a smaller set.
If you've got polybags to shift, you could proffer them with the purchase of a larger set.
Hope this helps!
"Nothing goes down 'less I'm involved. No nuggets. No onion rings. No nothin'. A cheeseburger gets sold in the park, I want in! You got fat while we starved on the streets...now it's my turn!" -Harley Morenstein