I generally get 230 bar in the BOC 'free shoes' (size Y) bottles for argon and argon mix. Not sure if the larger bottles are at the same fill pressure (or whether you are very short).
You can't get the full pressure when refilling unless you use a bank of cylinders to equalise the pressure drop.
If they are doing it "off-account" & not taking the p*** on price I would be happy & grateful of the service.
weldequip
Well first time round they provided me with a chest high bottle (Y size?) and filled it to 180 bar with pure argon for £60 with no hire fees. They said now you have a bottle and we can refill it when you need more.