I've got three of the Foodsavers, all of them are the old style (pre 1993) ones made in Italy. My first one I bought rebuilt from Professional Marketing Group (PMG) in Seattle for $85. It has lasted the longest... 5 years. The other two I got at yard sales for $5 each.
The one thing you can do to prolong the life of your home vacuum packer is to not suck liquid into it, pat down your fish prior to sucking. If you do suck in fish liquid, put a little warm water in a bag when you're done and give your packer little "sips" of warm water... it will clean it out... then run a little silicon-based lubricant through it, like the stuff you'd use on the dash of your car. This keeps the piston in good shape. Check out PMG's repair site for these and other tips:
http://www.pmgquality.com/repair/Repair.html Now I have two packers that I've done this to that still don't work well, as these older-style ones get old, the foams that form the seal against the bag get hard, and don't work. I just ordered and received new foams and new pistons for two machines, and hope to repair them myself soon.
Parker, you should call the Wild Salmon Seafood Market in the Fisherman's Terminal, I seem to remember them doing the vacuum packing for pretty cheap per pound... and keep in mind the commercial guys usually use thicker mil bags than the normal Foodsaver bags, which comes in handy when you handle your frozen stuff around a lot, like me with a chest-style freezer.
P.S. you can buy the thicker mil bags from PMG and use them in your Foodsaver also.
-N.