For a long time now, i have been showing how to forecast the trends to come. recently i showed that seasons bring in different needs, and there are products that are related to products that are needed in certain seasons.
Now, i want to generalize further. if there is a need for something, the price goes up, unless supply goes up. this means, if it is Christmas, then for example puppet shows goes up in supply and price. this is the perfect time to drop your price, as then you will be beating everyone to the punch and making some money instead of no money.
But, why not do some research? find when typical people celebrate their anniversaries or children's birthdays - you could unravel a lot of demand through research and then create a monopoly by 'renting out' your competitors. say you know there will be a lot of playstations sold at a certain time, you could buy in bulk as a group in September, telling them it is for Christmas, then sell in the same month with your own strategy, yes?