I used to have that problem also. Now I just order 5 rolls at a time. When I get down to 2 rolls, I order more. Funny they always have the laminate, but not the vinyl.
I was told I needed to buy a bigger machine because 30" is becoming outdated. Would be nice to do that, but it would also mean a bigger laminator.
I don't do many jobs that warrant bigger equipment. If I do, I have a good shop to outsource work to.
Dave