Earlier quoted context omitted.
Just as a point of reference, this is about on par with AT&T family share plans - I pay $145 a month for 3 iphones, unlimited text and talk with 10 gigs shared data. With taxes and fees it comes out to right around $160 (which would be the same here if I used all 10 gigs). The down side is that I'm not refunded for any unused data, so I pay that every month. But we use a good chunk of it every month, so this wouldn't…
I also use an AT&T share plan and they recently started rolling over unused data. So while I'm not getting money back I feel like I'm at least accruing something when I don't get close to my max. Depending on your plan they might be doing the same for you now too?
Month 1: Get 10 Use 5 = 5 rolled over.
Month 2: Get 10 Rollover 5 Use 5 (of the 10) Lose 5 (already rolled over) = 5 rolled over.
Month 3: Get 10 Rollover 5 Use 5 (of the 10) Lose 5 (already rolled over) = 5 rolled over.
Month 4: Get 10 Rollover 5 Use 5 (of the 10) Lose 5 (already rolled over) = 5 rolled over.
By Month 5, you would think you would have 30 (10 + 5 rolled over from each month) but you only get 15.