I have a merchant account through authorize dot net , and it doesnt have a add to cart function , so i need you to make me a add to cart function , i have a some what made add to cart function but the guy is having troubles. We have about 20-30 items and we have shipping tax needed to be added to items and free shipping if customer buy more products. We need you to make this basically , it also can be php the check out page. No out going links either.
