Not sure what you mean by redoing the power. Do you mean running a direct run of 8 gauge from the board to your system? Adding a few good quality receptacles? If so, that should not cost that much. I've done it and it is a worthwhile improvement. I'd just hate to see you ripped off.
Should I redo the AC power in my house?
I was inspired by the Michael Fremmer YouTube about how he went to great lenghts to address the power in his home. Also was urged to do so by Mike Lavigne. Thanks Mike.
Fremmer and Lavigne are thrilled with the difference it makes in SQ. Perhaps comparable to getting the next level up on all components. Mike referred me to the consultant both he and Fremmer used-Rex Hungerford of King Rex Electric.
I would not go to the lenghts of those fellows but still would do a lot. The whole job should run about $4-5K. I started this current quest interested in grounding but Mike L and Rex both highly recommended I go the full boat.