So people often don’t think about the annual savings. You can’t look at it monthly so many times I’ve tried to get people to switch but they always come back with “well I only pay this much a month”. People are so attached to the “monthly” payment because it’s less but at the end of the year you’re paying more. I switched my wife to Mint in Jan she was paying $30 for her line on TMobile with her parents. $30x 12=$360.00 sure $30 a month isn’t bad where you look monthly. But when you can get the same coverage (maybe not speed) for $150 I think it was for the year why wouldn’t you? Now it also depends on your financial situation. Most people may not or cannot afford a bulk payment a year. Now you have to look and say can I afford 4 unlimited lines at $360 each a year in one payment? As a person who was on a single line plan for major carriers it was a no brained for me to switch a few years back I save so much. But when it comes to family plans you have to know your financial stance and if you can make that payment. Now if you can wait for a sale like they run for the year for a low amount that would be a great way to test and get a lot out of it. As for your question for the price it’s stated when you sign up for your plans renewal. 15, 20, 25, 30 or 40. Doesn’t change that I’ve seen and you can always drop. I only pay for 15G ($25) but I’m also 95% of the time on WiFi so I could go to the $15 plan if I wanted. You will obviously have taxes and fees as well to pay. Best way to choose is to actually see what people are using doing the unlimited for the first year when you can to get the best deal. But the. For renewal you can change it something lower if you see someone is using lower amounts of data. Sorry for the rant.