I just finished my AFF recently and I did not have video. I suppose having video would have been an advantage in terms of actually being able to see the stuff that my instructors were telling me about in the debrief.
With that said however I found that the most important thing for me was spending enough time visualising and practising on the ground.
So if money really is a critical factor, I think that you can be successful at AFF without the video option.
Whatever you decide, enjoy AFF. It is a great experience, you are going to learn superfast and have a wonderful time.
Cheers
Bradley