I just did my own wiring for my future hot tub. Cost me about $450.00 for 80 ft aluminum 6 gage wire to the sub box, 20ft copper 4 gage wire from sub box to tub and sub box this was for a 220 line with GFI breaker. Aluminum runs about .80 per foot, but copper runs about $2.86 per foot, this was my cost as a home owner. The electician cost and extra $100.00 to wire electric box in basement and sub box near tub, about 1 and 15 minutes work for him. When I contacted some electician they quoted between $850.00 to $1350.00 they install the wiring. I saved by doing the main work myself but still need to have the underwriter to guanantee the house from electric/fire about $80.00. Like a Plumbers, Electicians are costing alot these days. When they hear it a hot tub going in they think you have money to burn.