"Is a homefill worth the expense?"
That all depends on your end use. If your torch will run fine at 5 to 10 psi directly from concentrator/s and your have sufficient capacity, then no.
If you need greater capacity for raging or your torch runs best at higher pressure then perhaps. What is the cost to fill a tank at a welding firm in your area? Do you have issues with moving a large heavy tank? Are there stairs involved? Are you satisfied with oxygen purity at 95% in place of 100%? Are reasonably priced oxygen cylinders available in your area? What is the cost of power in your area? If the unit breaks down can it be fixed without a lot of cost or shipping issues? How long do they last?
You may want to check with the folks at Talk Glass as another source of information.
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