:stupid:
I got all of my 1/2" line, and 1/8" line for gauges, and ALL my fittings, for about 100 bucks. The big rig shops are prolly the cheapest you will find the fittings. PTC fittings will cost more than Compression fittings, and if they don't when you price them out, make sure they are DOT, cuz I KNOW, that all the fittings i've ever looked at, PTC DOT's where about a buck or two more each than teh DOT compressions.