Ouch! ...almost $3 USD per key for novelties.
There are 23 keys, 15 designs (new molds) and 4 colors. Also the number of bigger keys is a lot. For example 3 X 2.25 Enter, 2 X ISO Enter , 1X 1.75u, 3 X 1.25 u and 2 X 1,5u.
GMK pricing depends on all these factors (especially sizes of keys, colors and molds)