I kind of feel I was screwed over on this very issue. I submitted what I thought was a High Value Comic for pressing and grading. Looking at similar items on a very reputable auction site, I thought maybe it could be in the $5000 to $10,000 range. So, when I got to the billing part, being a first-time submitter, I discovered that they wanted 3% for pressing and 3% for grading. Ok, Hope for the best $10,000 = $600. I began to second-guess my admittedly amateur self-grade and thought; Ok, I'll back it down to $5000 and I'm sure they'll tell me if I owe them more....... Only the online submission form locked on the $10,000 valuation and I couldn't change it. So, it was either send it or don't, so I authorized the CC transaction and sent it in. As it worked out the Grade came back lower than I'd hoped for with a market value probably under $5000. My guess is that if I'd undervalued the item, they would have quickly let me know I owed them more, but there was certainly no lower fee than I guessed. Since they are the Pros and I'm an amateur, wouldn't you think that was fair?