I've made 4 successful purchases from ChinaBuye in Canada. I bought the following things:
1 E27 LED Bulb - still works after about a year
3 E27 LED Bulbs - 2/3 still work after about a year
1 set of LED bicycle valve caps - batteries died after a while but fun while it lasted - they turn on when you start moving and your crappy old bike now looks like something out of TRON when you ride at night
1 bottle opener that looks like an oldschool key - best $2 I spent online, works well and looks cool
I've never spent more that a few bucks at a time but all of my purchases have arrived in about 4-5 weeks after purchasing.