I can understand some people being frustrated at the fact they bought software today for full price only to have it go on sale a week later at deep discounts. In most places If you bought a TV or stereo or a lot of other products, if it goes on sale within a set time you can go back and get the discount or return it and buy it again at the reduced price. Unfortunately that does not happen with software that I'm aware of. So, you can buy today at full prce or wait for a sale, the choice is yours alone to make.
Personally, I'm not interested in the Mi-8, but I might buy it when it goes on a deep discount sale. Same with FC3.