Looks like Thank you points are basically good for 1 penny per point in gift cards or up to (but not exceeding) 1.33 cents per point when airline tickets are booked through their webpage.
$30 per month fee if balance is less than $50 (30k TYP) or $20k per month for the 10k TYP.
https://online.citibank.com/US/JRS/p...do?ID=Packages for a list of all the fees and minimum balances. They didn't make that easy to find.