These are each developer's usual structure. Plans change with every release and promotional terms often run alongside them, so treat this as the current picture rather than a quote — I confirm live terms before you commit. No structure is presented as preferable: the right schedule depends on your liquidity, your financing and how long you intend to hold.
Select the question you need answered.
Pick what's actually on your mind and I'll answer it against your budget — with the two or three structures that genuinely fit, and the ones I'd tell you to skip. I sell these every week; you'll get a straight answer, not a brochure.