content: You're the only person I've ever heard say that they quit reading comics because of those reasons.  I hear way more people say they quit reading comics because they no longer liked the stories, characters etc. Or they got sick of the constant "SuperBatWolverine dies! But he'll be back in 3 months!" bullshit.   I heard a lot of people just say they "grew out of comic books". Others quit because they didn't like when an art style changed. Never heard anyone say they gave up comics because they got lost in the mail or sold out at the store too fast.