item_msrp_set: [200000000000000000000000, 400000000000000000000000, 800000000000000000000000, 1600000000000000000000000, 3200000000000000000000000] average msrp: 6200000000000000000000000 (6.2) / 5 = 1240000000000000000000000 (1.24) average msrp: 12600000000000000000000000 (12.600000000000001) / 6 = 2100000000000000000000000 (2.1)