No. one - the Op is comparing a vendor as in pot vendor at a convention with a bonsai professional with a retail store. The pot vendor can charge anything he likes because the stock is bought and paid for. You can put an inflated price on it and take it to the next fifty conventions until it sells in five years. Maybe it never sells and you finally take a price reduction at a convention and finally sell it for what it was worth, probably 25 cents on the dollar.
Second - Ryan will have to pay for insurance, power bills, heat, shelf space at however much a square foot, which even if he owns the space it still has to produce revenue at a profit or why do it? Liability insurance, CPA costs at the end of the year, floor taxes after inventory and many other costs associated with owning a business. Don't forget he will probably pay taxes as a personal tax return, which will kick him into higher tax paying brackets.
Tres - Ryan will have to pay the bill at the end of the month for the material he stocks in his store. Granted he buys it wholesale, but the bill is due in thirty days, but it may take a year or more to sell all the tools, the jin fluid, pots, whatever he sells. Selling goods quickly and efficiently many time per year is called turns. Most retailers would give anything to get 10 turns a year. That would be a dynamic business. That means you would turn all your merchandise every 1.2 months, a very profitable store.
Quatre - Leo does not have a bonsai store, he keeps referring to vendors. Vendors have no overhead per se.
so.....to compare apples and apples, let Leo go rent some selling space from a landlord, buy some liability insurance, (in case someone slips and falls), workers comp if you have employees, a CPA, and then pay the monthly bills on time (power and heat), run a household (personal rent or mortgage, power bills, food, car expenses, gas and oil) and manage to turn a profit by selling just below Ryan enough to say "Hey, I'm cheaper than the "the high end benchmark guy". Then I will give you an atta boy