I think it's multi touch diseas

Prices range widely from area to area... Taking in consideration the experience and warranty period, etc... you will pay anywhere from $50 to $150. Just ask if they replace the Meson (Touch IC) or reball Meson or

"Reflow the IC" <------ Stay away...

Also find out if the "M1" Jumper is included in the repair (As it is needed for a good repair). There are various shops you can find by using Google... or you can also go HERE to see a list of businesses listed in the "Pros" section of IFixit.

Most offer a "No Fix" "No Fee" Policy as well so you have nothing to lose if you do your homework on the business first :)