Leaving Bob's place, Richard had successfully traded that piece of flesh for a bunch of things he valued highly.
This included, but wasn't limited to, the limited research rights to all alchemy sabers before the end of the war, an unusually high-quality fist-sized flame gemstone, a third-level Fire Lizard's heart, as well as the body of a second-level dragon-cursed sorcerer.
Richard had managed to exchange for these items not only because the flesh he held was of exceptional quality but also because such flesh was exceedingly rare.
The rarer an item, the more valuable it is, and as long as it's sufficiently rare and useful, the Wizard Commerce could make up for any losses incurred in the deal with Richard by profiting off other wizards.
Of course, that was assuming Richard didn't mass-produce and sell these items.
And right now, Richard had an abundance of magic essence and had no plans to engage in such a damaging act to both parties.