Amazon has the 124-Piece LEGO Marvel Black Panther Mech Armor (76204) for $6.99 - $1.40 off coupon (check "Apply coupon" box) = $5.59 with free shipping on $25+ or with Prime. 

Includes a Black Panther minifigure and a buildable Black Panther mech with fully jointed arms, legs and protruding claws.