Originally Posted by
ramzilla
Buy all the parts yourself on line. Then either pay a bike shop mechanic a flat pre-negotiated sum to install or, do it yourself. In order to do it right you need 1) new handlebars, 2) stem, 3) grips, 4) brake levers, 5) brake lever cables, And, depending on if the bike has stem shifters (down tube shifters don't work well with upright bars) you might need some thumb shifters & shifter cables. It's about $125 worth of stuff. Bike shop might charge $75 - $80 to install.
Only
1) a handle bar is required
...
2) brake cables and housing are nice to change, but the old ones could be reused
3) a handlebar tape can be reused if it's new
The installation process is straight-forward, why would pay somebody to do it?