500 coins for a 30-slot weightless bag??
Since you earn 5 coins per successful mission, that's 100 missions. Say they take an hour each. (The likelihood is that this is a VERY low estimate, if you read the effort required in each mission but just for discussion purposes, call it an hour.) That's 100 hours, or the equivalent of TWO AND HALF "work weeks".
LOL. For that much effort they should be 48-slot weightless bags...AND add +20 to your favorite heroic stat!
Edited, May 16th 2014 7:27am by Sippin