With HP's decision to cancel all devices that are running the webOS, they put their Touchpad on a fire sale. That means that after only a few weeks of having their tablet on the market for $499 and $599 for their 16GB and 32GB models, that the price went down to $99 and $149 respectively. That's a HUGE discount and prompted so many people to buy them.
I was one of those people that managed to acquire a 32GB Touchpad during their online sale, although it took them nearly a month to process the order and have it shipped out. The delay was mainly in part to the extreme demand and having over 10000 orders to go through from the weekend sale.