Just a note on postal shipping rates. They are changing on May 14 (read, going up). This includes Priority Mail. If you are shipping after that date be sure to check on the USPS website before charging for shipping (assuming you're shipping USPS). I may go back to shipping Fedex Ground if it turns out to be less expensive than the new rates.
They are also adding something called "Dimensional Weight" which is another way of charging you more for a bigger box even if the weight is low.
Dave in Ft. Collins, CO