Walmart price drop on DSi and DSi XLs

I've been keeping an eye out for a good deal on a Nintendo DSi for my son, since we *promised* him a DS when he finally learned how to read.  Since he's making great strides, we'll be forking out the money for one sooner rather than later.   I just saw on Walmart.com that they have a price drop and that includes some that are bundled.  Check it out if you are looking for one for Christmas.  I did check Amazon and they did have some priced at the same as Walmart's at around $149, but they also had plenty more that were higher and not in colors I'd want.