"We love the food, we always get an entree, tots, and shakes, and I know that it's gonna be way expensive, but my daughters love it. However, on this most recent trip I made a comment to the cashier about how expensive it was $30 for two people) and she says that it's cheaper if I order the combos and just pay an up-charge to change the soft drink to a shake. I thanked her for telling me that, but what I want to know is how come nobody else has told me that when I order the food? Is that written on the menu? If so, I haven't seen it. Anyway, we will definitely continue to eat at this Sonic on occasion, but from now on I will order the cheaper way. I just hope that someone else learns from my expensive mistakes."