I just started using HeyGen to create short videos (<5 min). I have the Creator package that comes with 600 credits per month. During my testing, I noticed that the tool quoted me a certain number of credits before hitting Generate video, which is nice to see for planning purposes. However, now that I started production, I see that the # of credits quoted up-front is very different than the # of credits actually used. For example, in one video I got quoted 7 credits and it ended up using 31 cred