I really need to get this option on to the review page. Right now I'm applying a shipping discount for my users, am applying role based shopping, and our users are signing up as a role.

If I could get the gCheckout button from the "cart" page to the "review" page, life would be good. I understand there are policy issues, but I thought those were only in regards to when your users are ordering a product.

Any help would be greatly appreciated.

Or else if anyone knows a good alternative solution to applying discounts for certain members at the cart stage, as well as the tax rate for a state, and discount after a certain price on shipping.