i saw this tank set up on eBay and was wondering if anyone has ever tried these. It’s less than half the price of what you see in the stores.
https://www.ebay.com/itm/9L-300bar-4500psi-Carbon-fiber-air-tank-red-fauge-valve-filling-station/232536475677?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649
https://www.ebay.com/itm/9L-300bar-4500psi-Carbon-fiber-air-tank-red-fauge-valve-filling-station/232536475677?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649