If you buy packs you get 5 cards in each.
The problem is you really have to buy 100 at once minimum to guarantee getting something decent, ideally 200, even then it's not guaranteed you'll end up being satisfied.
Personally I find it's better to just buy individual cards on the market.
Yep, that's what i've been doing as of recent. Better returns.
Thanks for all the knowledge that you share!