This may have been shown before. But here is is my experience. I purchased a 45 minute SCBA tank with 5 years and 10 months left on the 15 year life, for $75.00 on eBay. The tank had no valve in it! They had lots of them and were asking $100.00, I offered $65.00 and they countered at $75.00 shipped.I found a 347 tank valve to match tank threads for $25.00 shipped. I was able to buy a pcp 4500 lbs rateded valve with 3’ hose. For $49.00 on eBay. So $75.00+$25.00+$49.00=$149.00 add $30.00 for a fresh hydro and $7.00 for fresh fill! And you have a fresh 45 minute SCBA TANK with over 5 years left on its life for $186.00 These tank were still available last week! Hope this saves some money for some of you! JD