Gfugal, I’m not exactly sure how much they are...maybe 20 bucks for a 20’ roll. We always have a roll at the house because I love vacuum sealing everything for some reason lol. I was able to use the same bag twice with no degradation of anything. Maybe be able to use it many more times.
DC, I have been filling the steamer just beyond the max line and I get about 25 minutes before the water level is at the refill line. I obviously have to refill and keep steaming some more mid steam session to get a solid 45 minutes on a limb. So the pic I posted here I only had two small nail holes at the bottom of the bag and it was really inflated. The second limb I poked two more small holes to make 4 total small holes at the bottom of the bag and it was still quite inflated but had less pressure in the bag. I didn’t notice any difference in the bendability of the limb but I was only doing minor shaping here. I was actually thinking of doing the exact same thing to the hose as you mentioned...I still might shorten it a foot or two but just for convenience sake.