Not sure if this is for everyone, but due to the amount of Stainless I have coming in, I rang BOC to see if I could hammer a deal out. Stainshield Light was listed at £483 plus VAT for an X. Stainshield Universal was listed at 175 plus VAT for an X. The prices reflect the Helium content in the mix, what with the “worldwide shortage”. 4 days later I received at call back regarding my enquiry, and was delighted to hear that a deal was available. Stainshield Universal is now listed, for me at least at £128.26 inc VAT and £2 a month rental.