I'm thinking of building my own bike. Here's my idea.

I want to find a frame I like and then buy another bike that's already built. This bike will probably be on a steel or aluminum frame. Take all the parts from this bike and put them on a better frame. Would this be cheaper than buying part at a time?

I found a frame for $150 and a older bike with 105 components for $350. That's a $500 bike. Maybe less if I can resell the old bikes frame for a few bucks.

If you have built a bike before how did you do it?