Well, of course the economical way is to pull a lazy sibling/spouse out of the house for 5-10 minutes to pump the pedal...

But I noticed something that concerned me about the build-it-yourself pressure bleeder that someone was distributing plans for a while back

On the professional bleeders, there is a diaphragm between the fluid and the pressurized air. No Airation!

On the make-it-yourself (without a diaphragm) , I suspect you're airating the fluid when you pump up pressure (Even on a micro level that you may not see easily)

Bleeding is easy enough that you don't need alot of gadgets , if you're set on using a gadget-- use a hand held vacuum pump and a 1 man bleeder cup from autozone