I lucked out and bought a broken one for $50 at my LGS. The owner (my friend) wanted nothing to do with the kid (punk) who was desperately trying to sell it for beer money. He wanted $100 for it but admited it was broken (bad feed ramp, wouldn't feed). Owner told him to sell it to me for $50 and he winked at me so I bit. This was before the Sandy Hook laws so we did a ftf transfer and the kid leaves.
So I ask my buddy, "ok what gives, why did you want me to buy this broken plastic toy gun?" He says, "I'll send it in to Kel-Tec as a dealer and they will fix it for free." The kid wasn't the original owner so he couldn't do that but they will do it for a dealer, at least a few years ago they would. He was pretty sure that kid has stolen from him once before so he had no interest in helping him.
Sure enough they fixed it for no charge and they covered shipping both ways. New feed ramp, new barrel, new mag release mechanism, a few other parts I forget, thing was like a new gun. I traded it for a used but unfired M&P-15 AR a few months later, even up. A guy bought his kid the AR without asking his ex-wife and she got pissed so he traded me the M&P-15 for the less scary Sub2000 in 9mm. I sold the M&P for $850 after Sandy Hook but before the new laws went into effect. Best $50 I ever spent on that broken sub2000, made $800 on that whole deal.
Anyway, I thought it was a cool little fun gun but I agree with Danjal, it is the definition of plastic fantastic gimmick gun. Not knocking it as a backup/pack gun but don't expect it to hold up to high round counts or other abuse.
