Another Question?

I posted last week about a customer of mine who would like me to restore about 200 of their pc’s. I was wondering at the time if I needed to send restore media back with them since I wasnt selling them.

Now I find out that these units may not have a CoA sticker on them and I am wondering if I would have to order them or can I just get the product key for each one and put them in a spreadsheet to send back to the customer?

Also where would the cheapest place be to order the product key if I need to. I am on a tight budget for these units and hope not to have to spend to much for this.

Thanks