Should take about 10-15 minutes to change. Did it myself as well.
One way is, using Notepad++:
1. Place all mods you don't want to modify out of your Cortex Command folder.
2.
-> Search -> Find in Files
Find what: Buyable = 1
Replace with: Buyable = 0
Filters: *.ini
Directory: Your CC folder
Select In all subfolders
Click "Replace in files"
3. Then search a second time:
-> Search -> Find in Files
Find what: Description
Replace with: <leave empty!>
Filters: *.ini
Directory: Your CC folder
Select In all subfolders
Click "Find All"
4. Now double click every line that has something in the Description that you want to have disabled and add
Buyable = 0
below it and save the file.
Hope that made sense.