What sort of quantities do you want to put through it in one session ?
What size pack are you after ? . There is or was a small commercial one on ebay yesterday .
If it is just small packs of home kitchen things, I have had a Biffinet one from Aldi ( available elsewhere ) which is four years old .
With the sized bags I use It's OK for about 8 standard sausages or 2 fair sized chops ...... , 3/4 pound of sliced meat with gravy ...... , 1 & 1/2 pints of liquids ......., mince or stew & curries etc.
Gold foil backed display bags are available , so are bigger bags or you can buy the embossed tube on a roll and cut it to size as long as it is using their 300 mm wide tubing .
I buy the bags as embossed ones as the tiny embossed criss crosses inside of the bag allow better air evacuation. They are from a company called .... fresherpack .co.uk , they also supply the thin anti stick tapes that cover the sealing wire on the Biffinet .