I got tired of replacing those FoodSaver machines and bought a Cabela's brand commercial vac sealer...well worth the extra money and much quicker too. I buy the pre cut 1 gallon bags and some of them have been reused 1/2 dz times.
As for putting up the burger...wrap 1# packages in Saran Wrap as tight as you can wrap them...then Vac seasl 2-3 of them in 1 bag..takes up alot less bags and space..when you open a vac bag just reseasl it or use all the meat.