If you don't have to have it today, it's way better and cheaper to just order from Vaporrenew.com and spring for their 5.95 flat rate. With gas being the price it is now and still rising, figure it out and see if that would be better for the type car you own according to MPG you get. Considering that it comes right to your door and they have pretty fast service, that's what I would do.
Another idea: I've been considering buying a Prime Rate membership from Amazon for $79 which gives you free shipping. They sell almost ANYTHING. And they're always cheaper than anybody else. OR they have an alternative where you get free shipping if you
buy $25 worth of product. I have an ECF friend who lives waaaay out in the sticks and was snowed in for
three months. She bought everything from amazon.com and then just walked to her mailbox on the main road that was cleared from snow. Gotta be careful in your choices though, as some stuff is sold by 3rd party and is not covered in the Plan.