It seems like TRU is doing a two-day Sale which is good for today and tomorrow. Link
They have this 20% off printable coupon that looks like you can use it for pretty much anything. Link
NDSi bundle is on Sale for $155 and $124 after 20% off coupon.
I don't know if any store will have a better deal on Black Friday, but I think it's not a bad deal for someone looking for a NDSi.
Edited by jooanyenna, 28 October 2011 - 10:07 PM.