I have a retarded good collection of Pokemon I'm wanting to sell it all in one place for about 40percent of what it's worth would this be a place that can help me do that

Scott's collectables is pretty reasonable when buying cards. Best option is to go in with the your collection and talk to them.

I doubt they'd be interested in a large collection of Pokemon singles, they don't sell much of them. I'm sure they'd look though. You may want to try a Pokemon TCG specific Facebook group or Reddit

Yes.

Get there email and email them a list of what you have they are very busy during the holidays.