How much does this cost to the nearest dollar?

Viking RG-10A Ring Booster
Viking Ring Booster to 10 is a ring booster designed to increase ringing power of an existing telephone line PABX extension ISDN Terminal Adapter or any other telecom device which provides ringing. It duplicates the incoming ring frequency and cadence allowing it to be compatiblewith custom ringing features. The RG-10A is capable of ringing 12 - std (1REN) phones. Designed to increase the ringing power of an existing telephone line, PABX extension, FXS port, IP phone system analog port or any other telecom device which provides ringing Duplicates the incoming ring frequency and cadence allowing it to be compatible with custom ringing features Capable of ringing twelve standard (1 REN) telephones and does not affect normal operation of the telephone line

Price is $171.00

Price: $170.97