This is very steep. CO awards are hard to get so some people may settle for an inconvenient date and hope that award seats on their intended date open up.

It's CO fault, not the passenger's, that awards are hard to get. CO awards are harder to get than other airlines. CO should not penalize those for trying to work with CO and then change dates when award seats become available. After all, award seats are goodwill and last minute seats that open up are seats that can't be sold anyway.

I consider the $100 fee abusive and encourages me not to fly CO. In my opinion, I don't see the redeposit fee as abusive as the $100 fee.