They are less material expense but with your current rates,
3 c4 = 3750
7 hv = 10,500
And idk, I think the rest of the points seem to correlate with each other. Although i'm not really 100% sure about adding items into the shop. Just because at the start of wipe I would have everything right off the bat, I think adding stuff like M2's and L9's might hurt the in-game market.
Stuff like 16x scope or pants I can't see myself wasting points on, It'd only take me a couple minutes to farm the supplies for pants or the 300 scrap to buy scope from bandit or outpost wherever its from.
Edit: And also to add, You have the M2's at about the same price as 2 heli attack signals. I think with that rate it would make more sense if both the HV rockets and C4 equaled a heli attack signal. (1 brad kill per 1 heli kill using points)
Second Edit: Brad is spawnable just like heli, What if we just had a brad signal instead of the C4 and Rockets?1