In the live stream with Rod F, he announced the prices for the weapon skins..
For All 22 weapon skins we have to pay 3600 points. Thats $45.
For a set for "Moving" weapon skins like the flaming guns, they are 420 a set. A set includes all 5 starting weapons, Gnasher, hammerburst, lancer, retro, and sawed off.
For non moving sets, we have to pay 320 a set.
For all skins for 1 of the starting weapons, say all skins for the lancer, it is 1200.