We are just finishing up with building our new E-Junkie shopping cart, and could use a bit of assistance in getting to the scenario we have in mind.
The background is that we are an independent publisher with two children's books that we are selling. We would like to offer flat rate shipping plus a per book charge, as follows, to US addresses only, using USPS:
Standard Shipping: $2.95
Priority Shipping: $4.95
Per Book Charge: $2.00
This way, if a person orders one book, with the standard rate, it will cost $4.95. If they order two books at the standard rate, it would be just $2.00 more, or $6.95. If they order one book with priority shipping, it would be $6.95. If they add an additional book, it would cost $8.95.
If they order one of each book with standard shipping, it should cost $6.95.
Can you please help?