Here are the original feasibility studies for the Czech high-speed rail (VRT) prepared for the Ministry of Transport.
You can find studies for each route: https://drive.google.com/drive/u/1/folders/1z1dQyph6PAKCIGye1R9GfvrtrUlNYfJa
Of particular interest are the spreadsheets which provide the financial models:
(It would be interesting to obtain the precise source/s of the figures used in lines 99 and 109 above paragraphs 5.6a and 5.6b of the sheet ‘Uspory Casu’ of the spreadsheet ‘A_07_0120201208_FINAL_CBA_SP_Praha-Dresden.xlsm’)
Prague – Brno:
It should be the ‘SK_320’ version: