John,
I called a few suppliers out of curiosity and they both quoted £185+VAT for the bottle, which I think is about what I paid, plus I bought an adaptor (which in the end, I didn't need). One however wanted £74.64 for the refill – which is bordering on extortion, must be a 300-400% margin (WECS) and the other quoted £51.60 (Eng Weld)
I think both are a bit pricey to be honest, but considering it's rent free, £51.60 seems fair enough, I've had it at least 3 years and it's only just nearing a refill, it's nice to have it there without the worry about any contracts or ongoing costs, thus if it doesnt get used, I don't mind.
When I first got my little welder, I got 3 or 4 of those little 1 litre bottles – they last about 3-5 minutes each cost £10-£15 each from memory – now that was expensive!
edit*
Worth mentioning, the chap at EngWeld said there are other cheaper rent free cylinders available, but I didn't go in to it as I didn't want to waste his time, I made it clear I didn't need a bottle but he was happy to chat prices for a few minutes and weigh up the pro's and cons, we roughly concluded that unless your using a couple of bottles a year or more, it's probably not worth renting a cylinder – note, a rough conclusion
Edited By Russ B on 08/06/2017 10:09:31