Even if it wasn't a sale, I guess I bought my laptop for a pretty good price. It was about 600-700 in dollars, and it's a good laptop, can run most games on medium to high graphics. Even though the newest games start to be a bit heavier, but it can still run them pretty good.
Other than that, me and my friends bought out a whole shelf of beer 4-packs which were on sale and cost about a dollar or so each.
I can't remember getting any particularly good deals I got but I do remember a story from a Macy's employee. According to him, a lady came in and got $50 dollar shoes for $1.50 with a bunch of coupons and discounts.
Once, the ART SUPPLY STORE where I worked got a shipment of Dance Dance Revolution: Highschool Musical to sell for christmas. Because it's an art store and people don't go there to buy videogames, it's not surprising that they didn't sell out after the christmas rush. Or by like, Easter. Eventually one of my friend's birthdays came around, and this person wanted a DDR mat so she could buy the disks for the game. The DDR:HS copies (complete with mat and game) left at the store were on their last legs in the clearance aisle at 2$, so I bought her one as a joke. xD The game is usually like 50$.
I bought a brand backpack on a market in Czechia for 15€. Later I found out that this model costs about 150€ in stores here in Germany. The people in Czechia seemed to be very keen for €, makes sense, since it is about 50% more worth there then here.
I know! Nuts, right?! It was a really nice one too. It was a pretty purple one made out of this velvet-like material.
There was also this garage sale where I got the entire contents of some dude's kitchen for $5. A set of really great knives, a couple cast iron skillets, a dutch oven, various other pots and pans, a bundt pan, and a springform pan. All in almost new condition, except the cast iron skillets. Those were rusted over, but I had no trouble fixing them.
I bought a flat screen tv that was being sold as used by the electronics store because it had been sitting too close to the display window and the front of the box became faded. The tv itself was still brand spanking new. The original price was around $600 and I got it for less than $200.