Avideo mentions one scenario. There are also B stock units that are new and have never been returned/repaired, etc. This other kind are new models that are either overstocks or discontinued models. All they do is reduce the warranty, which saves them money on possible repairs. They can then cut the price without cutting so much into their profits. Unfortunitely, unless you know an insider, you won't be able to know what kind of B stock they are.
"Refurbished"?
I guess we all know what a "new" component is, what a "demo" component is and what a "used" component is. We can quibble on the "box opened just for inspection" representation as somewhat fudging the concept of "new" and feel much better thinking that an unopened box really means it certifies the product within as really, really "new". My question then is : what is actually a "refurbished" product? Is it the same as a "B" product? Is there anything actually done to the unit to qualify it as "refurbished" aside from taking off the fingerprints and packing it neatly in the original shipping materials? Does a component returned by a consumer for some malfunction that is then repaired qualify as "refurbished". Is "refurbished" a cleaned up demo sent back to the manufacturer when a line or specific product in a line is passed over by the buying public or being replaced by a manufacturer to be liquidated by a central agent?. In short, are we, yet again, dealing with fuzzy definitions? Oh BTW what would the range of % discount be on demo units and refurbished units, if one accepts all the problems with generalizations?