hello there.
Proaviator charges 1100 Euros in PRG on NG,
Baltic Aviation Academy charges 720 Euros on EFIS in VNO (which is good enough to renew the NG rating) or 1520 Euros in BRU, AMS oder PRG.
all prices bove current.
I believe Air Baltic Training charges 1000 Euros for the EFIS in RIX.
no, this is not for Aeroprofessional, as Carpatair will renew your rating at their cost. But, Firestorm, take a look at what a base check is, it is definitely not part of a renewal, nor are companies required to do this. Most companies however have to do an OPC or PPC, depending which part of the world, some do an LPC, some cannot.
good luck!