I don't mean your web-host - I mean data uploaded from your PC via your internet plan. My camera uses up about 20 meg a day and a fair bit more in summer when the days are longer and more shots taken. That's a 65K image every 2 minutes. So around 1gb a month at peak times. Given you are talking about images uploading every 15 seconds, it could easily end up uploading 10gb/month. It may not matter with your internet plan either.
regards, Michael