As for the FMP, that link is legit. The artwork is of the older releases (Right Stuf links to the old and the new below):
Old version: Full Metal Panic! DVD Complete Collection (Hyb) (Thinpak)
New version: Full Metal Panic! DVD Complete Collection (Hyb) (Thinpak)
Old version: Full Metal Panic? FUMOFFU DVD Complete Collection (Hyb) (Thinpak)
New version: Full Metal Panic? FUMOFFU DVD Complete Collection (Hyb) (Thinpak)
Aside from the artwork, they are exactly the same. You might want to consider getting the singles for FMP? Fumoffu (1, 2, 3, 4) over the Thinpak collection since like many of ADV's Thinpak editions, FMP? Fumoffu doesn't include extras like clean opening and closing animations. Some newer re-releases have had extras re-included, but not this one.

On the other hand, both Full Metal Panic! collections maintained the extras (and disc count) as the singles. I think it's because the set was released way back when ADV started Thinpak-ing collections and hadn't started stripping them.