I was getting my frozen ATPL in Czech Republic so I can share some experience.
There is one website which I truly recommend to everyone who considers going there:
Aeroweb.cz - Informa?n? server pro piloty a z?jemce o l?t?n?
It is in Czech language but take this as your first challenge. You'll be struggling the language barrier in Czech Republic here and there, but eventually you'll figure it out. Try Google Translate as the first aid.
So, the section on AeroWeb you're most interested now is this: Flying Schools
Letouny - Kvalifikace pro vícemotorové letouny MEP(A) - Pilotní výcvik, letecké ?koly a pilotní pr?kazy, licence - Aeroweb.cz
I noticed it's being updated at the moment but normally it contains a list of all Czech schools with prices displayed. The price is the reason to go to CR, isn't it, so here you get them all in one list.
Feel free to ask questions. I'll be glad to share my experience.