There are some great gas pump solutions, but at $200 bucks thats too much!
I made my own solution with a Sig Gas Passer, (8) 2300 mah NiMh cells from Long's. I also bought a small project box to mount the spring-loaded switch (from Radio Shack) (the spring turns it off, so it cannot accidentally spill gas, and the box is so the spark from the switch happens in the box and cannot ignite the fumes).
So far I have pumped about 10 gal of gasoline through it, and I like it.