About 30,000 from me so far and I need to grind some more for a helmet
Edit: few dozen motes of light as well.
Edit 2. Got to rank 5 and got goldspiral and the helmet. Had another jolders drop and rerolled it about a dozen times. About 48,000 glimmer and about 40 motes total.
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Shitloads. Bought chest piece, cloak, a shader, two Lash, one Spear and re-rolled them and other IB weapons for a total of more than 200 motes of light.