F2P = never even connected a credit card.
C2P = credit card is connected but rarely used and only on the cheapest deals (VIP/POV, sometimes a 1 USD gem deal).
Anyone buying into the coin offers etc. in my view isn’t C2P anymore. C2P is almost like F2P but with little exceptions. Non-extremist non-payer.
If you go with budget of 20 USD and more, that’s not cheap anymore, even though for some it’s still in a low money bracket. In less fortunate countries that’s enough to make living for a week. Since the prices in EP are almost universal across the globe, if you are looking for common categories then you need to consider that. Even if 50 bucks for you personally is nothing, worldwide it’s not “cheap”, especially if what you buy is usually a disappointment lottery roll for a virtual unlock (so mostly throwing money out to the toilet like in a national lotteries).