What costs would be involved in adding a one page checkout to: [url removed, login to view] . I need it to work with my merchant account with quickbooks merchant center, coupon module, and shipping modules with estimator. I also want it to have the same look and feel as the rest of the site such as the colors, header, footer and nav bar.
I also need the updated USPS module installed for usps rates.
When guests checkout they cannot change their shipping address. That would also need fixed.
I was also interest in quantity pricing module for discounting on certain products. For example: buy 1 - 5 for $4.99 each, 6 - 10 for $3.99 each. I know there are modules that can do this, just not sure what one would work best.
Please let me know how much this all would cost to have done.
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npw@[url removed, login to view]