Just restocked my primer and thought I would pass this info on. Amazon has 6 packs of PlastiKote T-235 gray sandable primer for $28.55. If you buy just this you would pay $9.12 for S&H. But add (1) can of either white @ $8.97, black @$8.39 or red oxide A$8.76 sandable primer to the order and you are then over $35.00 for the total order and qualify for free shipping. This works out to about $5.78 per can, a big savings over auto parts stores.