Hi, I am buying the ketorolac tromethamine ophthalmic solution in 5ml bottle for $10.99 each month. I noticed other sites sell the 10 ml bottle for about $15 which would save $5 every two months. And I would prefer to buy two of those 10 ml bottles at a time to last 4 months. That would save shipping each month. Also Koala ships these tiny 5 ml bottles in a large cardboard box that could probably hold about 50 of those bottles so it seems wasteful. Please let me know if you can provide 10 ml bottles, and what the price would be, and if you can ship in a smaller box or a padded envelope. Thanks