Just posting this here because I'm not sure where else. I recently had a relatively big money client ask me to add on to a bunch of work that I did. The add-ons would have been a reasonable request up front but are totally out of scope at this point and the project was completed and paid for quite a while ago. The issue is that they want to know where some of the facts were sourced from and I now have to go back through my browser history and through these articles and review everything that I've referenced for almost 8,000 words of articles!
I'm not opposed to doing the extra work but I thought maybe I could bill them for some minimum wage hours just for going back and taking the time to find all of the sources. That might be a reasonable compromise between my normal bill-able rate and the request that I do this for free - I guess it's my fault for not expanding my client base to the point where I can afford to risk losing them by making a fuss.
Would you try to push back a little bit and charge the client more? Or just take it on the chin and move on? Help!