xbox currency.

Is there any place to buy currency for under msrp. even 10% off would get me to drop $100+

I don't know of any sales at the moment, that's not to say there are not any floating about, but you can try the trading section here on CAG -

https://www.cheapassgamer.com/forum/20-trading/

Maybe another member has some credit for sale or trade. Usually CAGs will buy some extra when there is a good sale then flip the codes on here for a slight profit if not close to the actual retail of what they paid.

I hope that this helps a little my friend.