You only get Baldur's Plate if you pay the full Baldur's Rate.
Paying full also adds Personality Attributes and Baldur's Trait to the character creator.
Phew, saved it.
Funnily enough, if you count all the Baldur's Gate installments:
-Baldur's Gate
-Baldur's Gate: Tales of the Sword Coast
-Baldur's Gate 2
-Baldur's Gate 2: Throne of Bhaal
-Baldur's Gate: Dark Alliance
-Baldur's Gate: Dark Alliance 2
-Baldur's Gate: Siege of Dragonspear
Doesn't that make Baldur's Gate 3
Baldur's Eight?