Not expensive. TOEFL score guarantee is a fee-based training service, but the specific price varies with various institutions, service providers and the services provided. The domestic IELTS TOEFL score guarantee training courses are mainly divided into three modes, namely 1V 1 private education, multi-person training and online courses, and the price ranges from 3000 to 30000, so the TOEFL score of 8000 is not expensive.