1. This rate, belong to guiding reference price.

2. Please give me a reference price.

3. Have you got the reference price I offered you in my last Email?

4. The fixed reference price may be adjusted for quality differences as necessary.

5. The marked reference price paid for one to one tutoring, with the level is different.

6. Four experiments delineate the effects of price expectation and confidence on the internal reference price.

7. The size of just noticeable difference is proportional to the original reference price.