Seriously ? What about buying a notebook, a high-tech camera, etc, in normal price and see it at 60-70% just some days after and during one day ? It happens all the time with high-tech products ! It is normal to these products to become cheaper as time goes on. Or to disappear from the market. So it is totally normal to have high-tech products with oscillating prices. We try to guess the best moment to buy, with lower price, but it is just a bet. We can't guess it right every time.