Hi there, I am after a bit of advice really, I regularly do odd jobs for people at work who are not really tech savvy but usually charge in donuts for the office as I do it at lunch in work. On this occasion though I have been asked to a job and the guy insists on paying me, I'm not complaining but I just wonder what you think I should charge. He has 2 old P4's that he wanted ram upgrades and wireless adding to for his kids to use for studying. I have put in ram that I had kicking around in spares and 2 usb wi-fi that I also had kicking around, I'm thinking that the parts were worth £20-30 as new would have been £50 odd. He also wanted the PC's rebuilt and setup and help configuring a home network. He also wanted me to network his printer if possible, I have a USB print server doing nothing that he can have. Basically I don't want to overcharge or rip him off as he is a workmate, but in the same way I don't want to undersell myself either. I've always been a bit useless at "selling myself" so a little outside perspective would be great!