You bought something yesterday and now a day after you see it selling much cheaper.
Unfortunately nobody can turn the time back. What happened has happened and life will keep going on .
Business put a price as per costs, and many other things that can’t be explained here.
At the end of the day, if the price was higher, would you have contacted us to give us more money for the difference ?
Be happy please and always put yourself in the other persons side for a little.....try to see their reason.