The best I found was a place up here in Lockport: $65 for a 5lb cylinder-filled. I can't remember the name off hand, I will have to get back to you on that. When I called some of the Buffalo area weld shops the price range was $65 to $115 for a filled 5lb cylinder, so call around. The prices were cheaper the further you went from the suburbs. I never called any city of Buffalo places, but the most expensive places were in Amherst, go figure.
I bought my all in one regulator from glass gardens and I am happy with it.
I wouldn't want to ship a tank, but I assume that onlines probably the cheaper option for the smaller hardware.
I'm not sure what you mean. The regulator used for a 5# tank is the same used for any other tank. You couldn't have the cylinder shipped filled but that's just $5-6. That would make that aluminium tank $45 or so. Anyway well worth the price. I would inquire about the shipping cost.