I phoned Ivan Electric to check my aluminum wiring and this is what he charged, 90.00 service, 270.00 to check plugs, 550.00 to replace 2 plugs with GFCI plugs, 180.00 for dimmer switch as the knob had fell off when he turned it on, 20.00 for two used fuses which sell for 8.98 at Lowes. I found the box for the plugs and it said they should not be used with aluminum wiring. The plugs in question cost approx 13.51 ea and the dimmer switch approx 10-15. He invoiced me under Insight Electric, I spoke with him today and he was quite aggressive. He is also on alert with BBB and his license number is in question. I really think this man should be investigated.