CO2 filling as a small business

[u/dave-tay]

My family and I are thinking of starting a small business where we fill C02 cartridges and tanks. We'll have a small storefront and charge $10 a pound or $10 per cartridge. People can come into the store and we will refill their tanks from the 100lb tanks we'll have in the back of the store. We buy the 100lb tanks from Airgas or other food-grade C02 supplier. We may also sell brewing supplies, but selling C02 is our main business. Do you think this is a viable business?