Still don't have a 3DS, yet? Amazon.ca (and Walmart) have the black or red 3DS XL for $89 when purchased with a $50 Amazon gift card.
Here's a link to the black XL. Below the product picture, there's a button to click that'll add the XL and GC to the cart. The discount doesn't get applied until checkout. Taxes are only applicable to the XL, and it gets taxed at it's discounted price. My final total was just under $150.