Skip the old vinyl beverage and gas line. Just gives you stale tasting beer sitting in the line, you need long runs to get the correct restriction, and yeah, it goes for about $0.75 a foot. The only line worth considering, now that it's finally available in the USA, is EVA barrier tubing. The most effective oxygen barrier material available, offers sufficient restriction that you can run 3-5 foot beverage lines at typical serving temperatures and pressures, it uses super easy push-to-connect fittings, is as flexible as vinyl (coils to less than a 2 inch radius,) and -- the kicker -- it only costs $0.38 a foot. Currently available from William's Brewing and MoreBeer, starting to be carried by others. I switched everything over and am ecstatic.