Have been into web photography for around 5 years, past flickr pro user. Finding a upload service that accepts large (10 mb) photos has been tough. I just think the price is too high and $5 a month would be my target.

We will probably go with $5 mo./25GB with some mechanism to extend the limit if needed.

How many of those 10mb photos do you roughly have in your use-case?

Over 5000. But doubtful that I would upload them all. maybe 200 max. I think a photo limit as flickr has done is the best format that a site like your can go with. Heavy users are willing to shell out extra for more photo limit (unlimited). I think you need a free option though (even if it's limited).