This is something I've semi debated on doing recently with some of my old pokemon cards. There's probably only a handful I'd want to do it with. I have a shadowless charizard, 1st ecition venusaur, 1st edition dark charizard, holo and just the rare and then maybe one or two other older cards. I've only looked into it a little bit. Part of what keeps me from doing it it having to throw money at these services, when they can be hit or miss either way. Where, from what I understand, cards can just get rated bad if the person is having a bad day. That and it's this whole thing of having to spend so much money to get cards sent in. Especially if it's actually worth some money. The actual PSA service is pretty much out of the question. I think they want like $150 to grade my charizard. SGC seems like a better overall experience and more worth it from what I understand. I guess there is the whole option of sending stuff to gamestop and having them send it in for me. But by the looks of it I could run into the same issue. Since they use PSA and I'd still probably be charged "extra fees" for sending in several of my cards. So at that point I'd end up either just saying screw it and trying to sell my cards as is or just sending in like one or two of my cards. Mostly just the ones that would probably be worth the most.