What is your time worth to you? $25/$30/$50 hour.
Decide that and you are all set.
I would imagine that they would have been charged $90 - $120 per hour if they had called someone in.

Where were you when I needed an electrical sub? ;-) $1000 sounds fair but you have to remember that what you and I might think as fair (knowing prevailing wages) isn't what your neighbor thinks is fair. Some folks think that the skills and knowledge developed over a lifetime are worth far less once you've "retired".

Obviously it's too late now, but in the future I'd suggest discussing wages up front.

Are you a licensed electrician or just a handy guy doing odd jobs? If licensed, you charge the prevailing rate in your area, then discount as you deem appropriate. If just a handy guy, you don't accept money, just ask for a case or two of your favorite beverage and hope they never have any problems.

Appreciate the responses and advice. He is the one who wants to pay and he won't drop it.

I was just hoping that someone might say this amount of work was really only 2 days, or that on average a light/switch is worth $X and a receptical worth $Y to give me some idea what the trade might charge. I was basing mine on $200/day and I'm not seeking tradesman rates.

Thanks again.

I don't know where you get the $200/day figure. What you did would normally be classified as T&M. Seeing that he purchased materials and you were helping him, I would say that $20/hr. would be a fair wage for someone's help. Rough-in on what you did would be two days max labor for one guy figuring that you had an unfinished space starting out, and that your pipe bending skills are up to snuff. If you did the majority of the physical stuff, then don't be afraid to charge him a little extra for it.