I need to buy a 4x8 plyboard but I need it cut down the middle to make 2- 2x8 pieces will someone do that for me in the store?

You have to call the store for that information.

Yes and there is no charge

Yes they will cut your lumber. They also sell 1/8 sheets.

Yes they will. I don't think they charge to cut, although I've been told they do.

Call to make sure

Yes!

Home Depot will.