Are they any more charges not mentioned?

All prices given by phone or in writing are estimated prices and might not be exact.
The number of samples to be taken and the services performed during the inspection will determine the final price; before any extra samples or additional services are performed the client will be asked for an approval. Sampling is based on findings during the inspection so it is impossible to quote an exact number of samples before the inspection is performed; sampling protocol is also based on IESO (Indoor Environmental Standards Organization) guidelines and standards.