Alright, the way we'll go adjusting this will be somewhat by halving it - though not for all.
Let me explain:
The way we are going about the change is by modifying the cost-ratio of the charges-per-use setting, since it scaled rather ridiculously by default (50 uses vs. 1 use only multiplied the value by 6). This will mean that single use items will cost a little less than half the current price but it'll balance toward being the current price as items moves toward 1 charge/use.
Let me give you the numbers - that'll make more sense:
Old (Bioware default):
Label Cost
Single_Use 0.1334
5_Charges/Use 0.45
4_Charges/Use 0.55
3_Charges/Use 0.65
2_Charges/Use 0.75
1_Charge/Use 1
New:
Label Cost
Single_Use 0.05
5_Charges/Use 0.25
4_Charges/Use 0.3
3_Charges/Use 0.4
2_Charges/Use 0.6
1_Charge/Use 1
It's not fully linear in terms of price vs. uses, but a whole lot more sensible. I did try making it linear, but it resulted in quite many items becoming way too expensive, and we'd have to go through all items. The above solution shouldn't cause any such issue - at most, it'll make some items cheaper than they were before we started messing with all this stuff.
I hope that works as a satisfying solution for all.