Aldi: Carerra Slot Car Sets for $59.99
Now 3.6m of track is not a lot, but then again you could be looking at twice this price (or more) for a kit like this. Let's put it this way - the cars themselves have a RRP of about $25 *each* and you get two of them in each set. So the transformer, controllers, and track all effectively cost $10...
A great christmas present for someone.... heck, get a couple and you have some spare cars. <grin>
P.S. I suspect you'll need to be quick for this - I reckon it's a really decent deal!