Today is the last day Target is offering the (any) 500gb Xbox One S bundles and an extra controller for $299.99.
Today is the first day that Target offered 15% off the system if you use cartwheel. That brings the system and controller down to $255.
If you have no interest in the extra controller, since Target pro-rates returns on bundles, you can return the controller for $50. That brings the system down to $205. You can make your purchase back in electronics, then head to customer service and return the controller right then and there.
Save a little more if you have/use your Redcard.

The system bundle will go on sale for $249.99 tomorrow and the cartwheel deal will apply, but this is a better deal, and as stated it only works for today.