Staples is running a $40 off coupon this week, you can get a new black 3DS XL for $160 - msrp $199
coupon is $40 off $200, use code at checkout:
It needs to be $200 minimum so need a $14.41 filler, could add this game case kit or find a game in the $15-20 range
Can also buy other things like Nexus 7, printers, chair, etc. If you sign up for free Staples reward you will get points back that is a few bucks on a future order.
Nintendo is selling refurbished 3DS XL's for $135-150 on their eStore as well
so really up to you whats a better deal. I've seen 3DS XLs drop to $150 regularly during sales, so this is only a great deal if you want a black one and want it now.