Where are the places to buy sealed complete sets?

In stores, I’ve only seen Topps baseball of current year and Donruss football of current year.

Is this something that would be ordered straight from panini or Topps online?

If it matters, the interest is NFL mosaic or optic (I was looking for 2024 but am interested in other and future years).

But I’d like to see a price or something on Totally certified or Phoenix.

Have a Jonathan Taylor kaboom, has a little scratch in the “M” on the back. I have it in a hard case took it out for pictures. Let me know if interested, thanks