Thats a general question, equivilant to asking "Hey I saw this dude downtown selling stuff. Are Torontonians generally reliable?"
It all depends on the seller. Optics should not get nailed by CBSA, but can be gay.
Maybe you'll find someone else to help you. Maybe black mesa... THAT WAS A JOKE, ha ha, fat chance.
My Buy/Sell 1337ness rating