I almost bought a kit for a Christmas present... Until I realized shipping cost almost twice as much as the damn plastics do...
I didn't buy plastics, but I did buy some stuff on eBay from Hong Kong. Right after I bought it, the listing got taken off of eBay. Paypal started looking into it (because I had already paid for the product), it took 2 weeks for shipping and the seller never contacted me; even after I sent him/her emails. I almost challenged the paypal transaction but the package ended up getting to my place the day before I was going to call the bank... Oh, and the shit ended up being knock offs. I don't care because it was cheap as hell and I should have expected it, but the quality of the product is pretty good for being a knock off!
Buying from Hong Kong is a gamble, I would think.