I do for most items, but I am extremely picky about things that have the potential to catch fire.
I only buy from eBay if I know exactly what I'm buying. Problem with anything these days is counterfeits and I'm sure that's no difference with batteries. There is some very dependable honest vaping supply sellers on eBay though. You can usually tell because they have been around for awhile and still have a 99%-100% feedback rating. The bad sellers never last long cause they have multiple accounts and are always killing off bad accounts as negative feedback piles up. They usually have like 3 or 4 stores open under different names on eBay at any givin time lol.
>^.^< Sent From Meow G2 Wif Mah Reo In Mah other fwuffy Pah