- 8.3", one tier (mini)
- 11", three tiers (iPad, Air, Pro)
- 13", two tiers (Air, Pro)
Could you spend the same amount of money on a regular 11" iPad with a lot of storage, or an iPad Air with less storage? Sure.
Some people want lots of storage. Other people don't care but want a wide gamut screen, faster processor, and better pen capabilities.
It's nothing like trying to pick a laptop from Dell where you have to spend hours digging around to even figure out what your options are. If someone asked me which iPad to buy we could figure it out in under 5 minutes.