On Chapters website they are advertising a $20 mail in rebate for a nintendo 3DS. The description on the form does not specify that you have to buy it at Chapters. Just it must be purchased in Canada between March 1st and April 16th.

Here's the link for the chapters advertisment:

http://www.chapters.indigo.ca/video-...e%3a2%3abanner

Here's the link for the MIR form:

http://images.chapters.indigo.ca/all...endoRebate.pdf