Just completed purchase of 2 cases at http://shop.militaryshooters.com/catalog/product.asp?ret_id=140211&pid=1031063. Seemed very reasonable to me. They say that if you order 8 of the 60-round packages they ship in the original swiss case. Hope that pans out. They do quote shipping before final checkout, so you know full price before committing. With shipping and option to require adult signature, comes out to 53 cents per. I didn't find anything better in my search this evening, so went ahead.
1 Swiss/Ruag GP11 7.5x55mm - 174gr FMJ - 60 ...A7.5SWISS 16 $28.99 ...