The difference:

A scalper, like for ticket sales, is only capable of buying out a very small fraction of the stock (tickets) and sells them as an extremely time-critical product.

Versus the Busse business model, where it almost seems like a majority portion of the stock is bought with the sole intent of reselling at exorbitant profit with no risk of devaluation via continued production or spoilage.

In other words, in classic capitalism, if the demand pushed the prices to 200% of the original retail price (which for simplicity we will assume is near cost), then somebody else would step in and offer a functionally identical product at the original (near cost) price. Because who would spend 200$ for a knife when the same materials and performance could be had at 100$. People who decide to buy the product with an eye to resale would have to be careful not to let their prices (profit margin) grow too high, lest they tempt competitors into the market. Plus they couldn't boost their prices out of sight if a specific model of knife continued to be made for significant lengths of time because there would be hundreds of thousands of items on the market instead of (perhaps) five thousand.

If you want the prices to get back to sanity, you have to either convince Busse to make popular models for more than a month at a time, and/or convince other companies to make a functionally identical product. The way it works now is not fair, but more relevantly it's not illegal or risky for the resellers so it will continue.