Enable notification on cost increase or decrease

Feedback on Bronson <bronsonsblood@yahoo.com>
Give weekly reports of % increase in cards their collection like a Fidelity stock market type thing. Have a notification system where if cards jump over a threshold like 100% (user can enter this in the preferences) then it will send a push notification to their cellphone and option to easily list the card from their collection. A lot of time players miss out on short term market spikes on cards because they didn't know about it. I think this is the biggest reason to have a collection tracker within a marketplace. The following list are some idea's of the rewards.