The price at a bench to craft a consumable usually is equal to or more than what a vendor of that same profession offers. Like the cost to craft a scroll or potion is much more than it is to buy that same item off the vendor. This makes it so crafters can't make staple products and sell them as there's a cheaper option that exists. It isn't about creativity, it is mechanically fact that benches charge more and there's no way around it.
Please either change the price of consumables at vendors or lower crafting charge rates significantly. Otherwise, many artisan skills are going to be extremely difficult to maintain profitability.