Hey, I'm in the same boat. have a vacuseal 4366m-hs, but no vacuum pump. I'm losing my mind trying to figure out what pump is compatible or where to get one at a reasonable price. did you have any luck?I recently purchased a Vacuseal 4366MHS that was advertised as "working"; upon receiving it realized that meant without a vacuum pump. Anybody know where I might be able to find an adequate and working pump for this machine?