You will find cheap iPads here currently starting at $249 for a new iPad Mini 2 Retina. If you include refurbished items the cheapest ones start at about $65.
You can buy all kinds of iPads here, including Pros, Minis, and Airs. In total there are close to 300 different iPads for sale with the cheapest pre-owned iPad 2s are being priced at just under $100. The cheapest iPad 3s are just over $100. A refurbished iPad Mini 2 is $200.
The cheapest iPads here are about $300. You can only get the latest and close-to-latest models here so no super-cheap ones. In total there are 32 different iPads here at the time of writing this.