Any suggestions for a relatively inexpensive siphon?
I've got one that I think uses the bulb for getting fuel from an external tank to an outboard motor, so marine web sites might be one place to look. The thing has to be at least 20 years old. And I saw a siphon with some type of pump at an AutoZone store a few weeks ago in the $12-$15 range.
For as cheap as they are I wouldn't risk trying to do it the old fashioned way. If you get that gas in your lungs, and you're very unlucky, it can kill you. Slowly. Painfully. Not worth saving $15.