For sale: New STC modem, agency condition, unopened and unused. Reason for selling: I have a Zain modem and don't need the STC modem. Price: 499 ‎ Please do not bargain. Only serious buyers should inquire. ‎ Please do not bargain. Only serious buyers should inquire. ‎ Please do not bargain. Only serious buyers should inquire. ‎ Please do not bargain. Only serious buyers should inquire.