Wow, do you feel safe buying DIRT cheap vapes from China? The country with more health scares than you can shake a stick at? The country where they pumped stagnant, diseased water into meat to make it heavier, where they dump raw effluent and chemicals into rivers that people wash in and drink out of, the country where baby food is regularly contaminated, so frequently that there is a limit on how much baby food Chinese people can buy from abroad?
You are a brave man, good luck with that, I'm sure everything you are inhaling is fine.
Mind you cigarettes are packed with the worst chemicals, so it is hard to say which is worse really!