Win a trip to a Canadian resort

If you’ve made or are going to make a purchase of an automotive product at Canadian Tire, check your receipt for the product number and enter to win 1 of 3 4-night family trips to your choice of Canadian Resorts. What’s the cheapest thing I can buy so I can enter? Good Luck!
http://www.gearupngetaway.ca/register.asp

Entry Frequency: daily
automotive purchase neededAge: age of majority
PIN required