Kijiji is a free local classified site that you can use to buy or sell almost any used item you can think of. Posting a sell ad is really easy: you select the category to list your item, enter a title, how much you are asking for the item, a short description and your email address (you may want to get a free email address just for this purpose). Optionally, you can provide your address (without the street number) to help sellers locate your area and images of the item you are selling.
Buying on Kijiji is equally simple: you send an email to the poster using the contact form in the ad. You agree on a price and a date and time to pick up the item.
I’ve used the site to buy some toys for the kids. For example, I picked up a Little Tikes Coupe car for $20 and similar items are retailing for about $70. I found that prices are a bit higher than garage sales but much cheaper than buying new. Unlike garage sales, you can search for and buy exactly what you are looking for. You also have to drive around to pick the item but you can easily combine the pick-up with your usual errands.