That’s comparing apples to oranges. The sienna seats eight people. You have to compare it with the highlander, which starts at 39K. The rav4 is better compared the camry, which starts at 26K or the corolla
I mean you’re illustrating the same rationale in a different way. Anyone who’s hauled kids around in a sedan knows it sucks, so you go shopping for a family hauler. Traditionally you get a minivan, so you check the price, and it’s nuts. You look at their SUV selection and you find a hit. Three thousand over a camry via car-payments is cheap compared to straining your back every day.