yep your right mate .you cant knock the service from AE and as u say sometimes there a little pricey £12:50 for 5 meters of the ADA stuff .they do have some cheaper tubing Aquili Clear C02 tubing - 3m £2.49 .i could maybe buy two packs of that and put a joint in there to join then together .but there out of stock . just my luck .

not sure how good any of this tubing is .i mean theres no way to find out if it leaks loads of co2