Hi there, some clients of ours recently gave photos of ours to a commercial blog without our permission. Aware of the mistake, the company owning the blog wants to make it right but it's up to me to send the invoice and decide what's fair to charge. They used 2 photos in the article and there was an accompanying video that had 4 of our photos featured that has had over a quarter of a million views. What's a fair asking price, specifically for a video with that many views? Any one have any advice in this matter? I want to be reasonable but don't want to sell ourselves short. Thank you!