"Too close in zones"? Really? I'm in the middle of the country. I send to my sister in California, and if I send over 2 lbs., it costs me over the reimbursement. I send the same weight to my friend 30 miles away, and it only costs $7.25.
Oops -- I think you need to take the company name out of the title of the shop.
You do know you can send to friends and families as long as it's not in the same ZIP as the PO you're mailing from, right? For example, 95501 can't mail to 95501, but certainly could mail to 95502, or 95500.
Unless, of course, some areas of the country are under a different set of rules than I get to see (which may be true, as I sort of follow some discussions on this subject, and people constantly bring up things I've never seen on any of my assignments).