You have three options, do everything yourself, pay the shop, or get a brand new one.
That's up to your hourly wage and how much you enjoy the repair work. My wage is dirt cheap so I do everything myself
Here's are some additional info:
-A ultra-lightweight 2/3spd wheelset costs around $150-200
-Aluminium segmented cable housing costs around $30
-I prefer chinese CNC ~$120 BB+crank, but YMMV (if you are heavy / pedals hard you need stronger one)
-Chainring costs around $30
-Titanium rear hinge costs around $20~$30
-Detachable pedals can be as low as ~$30
-Individual cogs are cheaper than $10