Welllllllllllllllll..........
There is a lot of factors that are ciphered into the equation. These factors are:
Rank, Weapon, Attachments, Number of Mags etc.
But if you mean only weapons I can not give you a full list right now but I can safely say at full price:
Mk-1 = 80k
Spar-16S = 35k
MX = 45k