I did all the lines on my truck, bought the 25' roll from RA and then used my neighbors hydro flare tool to do the ends...worked great, just be careful and bend the new stuff gradually.

Preformed (pre-bent) tubing is going to be big money...and shipping it will be expensive too, you're better off measuring the leaking section and then buying a slightly longer chunk (with flares and ends done) from one of the big box stores. Bend it yourself and replace.

Steve