Well I've never done nothing but just jeans in there, so idk how many it can fit. Now that you said it, I probably should put as many jeans as it can fit.
Depending on the cost per kilowatt-hour in your area and the size of your family, it will end up saving you $20 to 50 per month. I have an older model, and it paid for itself in less than a year. The only trouble is they don't last more than about 7 years with a family of 4. Still worth it, though!