What about your customers who bought before the offer, or the people who don’t need your product yet, but will do? Seems a really hackneyed way of going on,
It’s actually more about balancing demand.
March/April-September you can fairly reliably sell bikes and outdoors stuff. Especially new/shiny stuff. So your factory/logistics/shops all need s teady supply of those products. Come October no one wants anything, it’s cold outside, it’s miserable, there’s no daylight, so all those sales dry up.
So you cut your prices to generate a similar volume of sale through the lean months.
It also works in maximizing your sales and profit overall, you could sell at 30% off all year round, but why would you? If the market will pay 142% then that’s what you charge, once all that market is gone, you knock 10%, off and sell some more to those who can now afford it, and so on and so on until you’ve sold them to everyone you can whilst till making a profit. Those that buy at the start don’t get ripped off, they’re simply paying more to get stuff sooner the best example of this computing, you could buy a super computer in a server rack today for £20k, or you could buy a desktop PC with the same spec in 10 years.
Black Friday is the opposite, it’s the retailers slashing their prices in order to bleed consumers dry i the knowledge that there are no more paychecks between now and Christmas, so if they don’t then they lose out on the Christmas spending. You could view that cynically, or you could view it as the capitalist system working in the consumers favor to give really low prices just when they want to buy stuff.