Upgrade a Sora triple to 105 double
How much would a bikeshop charge to upgrade a sora 8 speed triple to a 105 10spd double? I would buy all the components and take them in myself. Wondering if this is worth doing.
The bike is a 2007 Trek 1000 and was a gift. I wish I'd had the option of getting a 1500 at the time with the better components.