The plastic pots, most the nursery's around here resell them to people, even used. If it splits then it goes into the trash.
I have a friend who runs a plastic recycling center, it's fairlys mall here in Jax, and can sometimes get my hands on stuff coming in. I tell you when those garden buckets come in, I have ZERO problem getting rid of them at all. I'll pay him premium price for them, (which is squat really) then flip them for a nice profit or I'll just donate them to the farm I work on.
Another item that's a huge seller / reseller / can't get hold of barely is clean 5 gallon buckets. By clean I mean food items or whatever were in them and NOT something toxic like paint or axle grease. Those I'll barter with the guy at one of the chicken places who sells chickens to people and trade for feed or stuff like that. Plastic containers in general that are not tore up or got nasties in them, you should have NO problem getting rid of at all.
Aaron