Well, for a Black Friday offer, CHF 449.- for a 4TB SSD is still too expensive in my opinion, especially if the 2TB version already costs 238.-, you would pay more per MB at 499.-, which makes no sense. If you want to get rid of the 4TB version faster, you should have set the price to CHF 379 (for Black Friday) and 439.- as standard price... but that's just my opinion.