Mini-Glider Robot Calculator This pocket size Robot Series™ calculator automatically glides open when you push the numeral 8 button; also features a full-function, 8-digit display, rubberized keypad and includes 1 button cell battery. Price: $7.49 ea. Tier 1 Price: $7.49 ea. (50 pcs.)Tier 2 Price: $6.74 ea. (100 pcs.)Tier 3 Price: $6.49 ea. (250 pcs.)Tier 4 Price: $5.84 ea. (500 pcs.)Setup Charge: $40.00