Jamestown Distributors has a lot of vacuum bagging supplies. A quality pump option would be somthing like this:
www.jamestowndistributors.com/userportal...=Vacuum+Bagging+Pump
A cheap option would be something like this:
http://www.harborfreight.com/cpi/ctaf/di...taf?Itemnumber=98076
The cheapest option of all would be this:
http://www.harborfreight.com/cpi/ctaf/di...taf?Itemnumber=96677
I bought this Venturi-type vacuum pump out of curiosity but have not used it yet. It requires an air compressor so if you don't have one it's probably not an option. I have not used it yet but I'll post results when I test it out.