Brickset, this mini version of Separatist MTT previously only available in Japan from Gacha Vending Machine inside a 400 Yen's plastic ball.Toys R Us Stores in Canada have been selling LEGO® 30059 MTT Polybag which is currently known as a rare item in North America only for $4.99. According to the
Considering it as the rare item, I think this is a good deal because maybe its price is already marked up in other etailer or online seller. So, put it as the first item in your wanted list. Canada's TRU also offers 30056 Star Destroyer and 8028 TIE Fighter, two polybag sets from May 2012 The Sun Promo with the same price.
LEGO® 30059 MTT itself is one of Star Wars™ Mini Building Set that released in 2012. It comes with 51 pieces that used to build a cool mini MTT in Separatist color scheme.
12/08/2012 - 30059 MTT Polybag available at Walmart US! It revealed by FBTB.
12/21/2012 - Amazon.com has listed 30059 MTT Polybag with various prices whose between $3.49 and $9.50.