In most of cases, residence permit(multiple entry visa) should be offered at employer's cost. The condition is that contact has been signed by foreign teacher.

Any way, monthly salary, fees for certificates,accommodation, etc should be stipulated in contract. Foreign teacher can choose paying agency to get a job(if it is very difficult for you to find a job yourself) or paying nothing to get a job directly from employer.

Suggest that you contact employer yourself! Remember, do not work to sign contract, instead, you better sign contract to work.