My understanding is that the green "returned item" tag is a requirement of a settlement Fry's made with either the FTC or a California state agency. My recollection is a bit fuzzy.
You may be better off buying online vs. a walk-in retail location, because presumably people can't just walk into the warehouse and stealthily remove parts from boxes. (As they do in the stores.)
Most of us have a love/hate relationship with Fry's. There can be issues with returned items and part-pilfering customers (as well as people who let their little kids play with the products...) but on the other hand their return policy is liberal. Most of the employees have no sensible answers to any question asked and they pester the heck out of you. Any given product category can be found in at least 3 1/2 different locations in the store - some being duplicates of the same products, some not. (This can be a good thing at times, like the "cheap USB cables that work just as good in the Experimenter's section, next to the Philmore products...)
I think at one time they were open 24 hours. Great if you needed a resistor or a diode at 2AM.
The walk-in stores will price match any local store if you show them the ad or RedLaser, etc. (Has to be a local, walk-in store.) But so will Best Buy.
I buy stuff at Fry's that I'm not sure if I am going to keep. If I do keep it, I keep it. No fair ordering online after you've decided you like the product, but you found it cheaper online.
Fry's prices generally are pretty close to the best online prices. On big items like TVs, they can't even come close, though, especially when you order out of state and are in a high-tax state (like California). They are hundreds higher on high-end TVs. But on items selling for, say $100-$200 they are so close it isn't worth bothering with going elsewhere online.