When a company reduce the price of a product, there are always going to be unhappy customers who have just purchased the item right before the price reduction went live.
You win some, you lose some. I feel your pain though. Been various times at the short end of the stick.
On a general note and FWIW if it is still within 2 weeks of purchase you might be able to contact customer support of a product to get the (or a) discount. Especially if you haven’t used the product you got a strong case because you have the right to notice the company within 2 weeks that you wish to return the item.