Bait and switch
Moving house is always fun. Particularly when getting hold of packing boxes. Moving companies charge for them if they're not going to be returned. There's a place advertising itself as the Box Shop which has "Boxes from $1!" all over its website, by which they mean "There's a beat-up box sitting out the front of the store exposed to the weather which is $1; everything else isn't priced on the website but when you turn up you find out it's $5 to $30 a pop."