as the people in the store will most likely tell you if you try to demand it
That's why I suggested complaining to the online store to arrange a pickup for that price at the real store.
If no money exchanged hands then there is no point to arguing IMHO.
You never know until you try and many companies would prefer to solve the customer's problem instead of alienating the customer.
I've gotten satisfaction from complaining about poor customer service before but obviously it's possible they'll just quote "I'm sorry, that was an online sale only" and I'd reply "I'm sorry, I'm now someone else's customer if you can't make it right"
See how badly they want to keep you as a customer.
If they don't want you as a customer, then take your business elsewhere to someone that might value you as a customer.
Some stores will honor the prices of other stores just to get your business and that's worth a shot too, but it's usually online vs online or offline vs offline only as offline stores rarely honor an online store price.
Most people don't even try to negotiate, if you can find a store with a live salesperson you may actually be able to barter, it never hurts to ask if the price posted is "their best price".
I've gotten big ticket electronics below the listed price (TV, computer, entire new set of kitchen appliances for a major discount PLUS the posted rebate) and once even negotiated with a tire store to throw in their road hazard insurance for free if I bought the more expensive tires.
Work the system as stores, online or offline, usually want your money more than they want you walking out the door giving it to someone else and you never know until you try.
Not to mention the fact they don't want people complaining about their service unless they simply don't care. Don't forget, request a manager, never stop at the front line flunky.