You seem to lack business knowledge in the sense you believer one wholesaler is the same as another. I explained earlier that expenses incurred by similar businesses can be quite different. If wholesaler A pays $30k monthly in rent while wholesaler B pays $10k or perhaps owns his warehouse that very much impacts his cost of doing business and hereby his markup.
I never even mentioned the savings enjoyed by a business which buys in large volume. The per unit price is very different when units are purchased in quantity and mean 10% or more in what the eventual cost to retailer
It is certainly NOT debatable that taxes in part determine final cost to market of any product.
That's not the debatable part. Taxes form a part of the cost to the consumer. Tariffs are a tax, therefore they will be passed along to the consumer as well. What's debatable is the idea that since tax costs are lower then businesses will meekly accept rises in costs in other areas. If they pass one along then they'll pass the other.
>> I explained earlier that expenses incurred by similar businesses can be quite different <<
Doesn’t necessarily matter. Prices in a marketplace are determined not only by costs, but also by the demand curve and by the amount of competition.
Therefore, two suppliers in the same marketplace will have to set prices about equal to one another, even if the costs of one supplier are greatly different from the costs of the other supplier. It’s the most basic working of supply and demand.