$600 is a very high price for the D40.

$500 from B & H Photo:
http://www.bhphotovideo.com/c/product/471716-REG/Nikon_25420_D40_SLR_Digital_Camera.html

$500 from Adorama:
http://www.adorama.com/INKD40K.html?searchinfo=d40

$500 from Samy’s:
http://www.samys.com/product_detail.php?item=9882
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Your best guide to the integrity of a store is always:

http://www.resellerratings.com/store/Adorama

Adorama gives a 90-day warranty on all Nikon refurbished products; 14 days from date of receipt for a full refund, and the balance for repair or replacement.

Adorama sells Mack warranties; you can visit http://www.mackcam.com for details on their individual programs.

All refurbished units sold by Adorama Camera are factory refurbished by the manufacturer. A refurbished unit from Adorama may be an ex-store demo, possibly used in field tests or sales displays, or it may have been ordered in error and returned to the retailer (who can’t then sell it as ‘new’ so it has to be sent back to the manufacturer for refurbishment).

A refurb can also have simply been pulled from the production line if something appears faulty, or if it hasn’t passed the final inspection. Most of the time it is a very minor issue that needs correcting, nevertheless, once it is pulled from the normal flow of production, it gets flagged as a refurbished model, so you may get a unit straight from the factory that has never been used.

A refurbished item will have been checked over by the manufacturer by hand, inspected very thoroughly, diagnosed, and calibrated by experienced technicians, and could therefore turn out to be more dependable than a new item – which will only have been checked by a process of systematic quality control protocol (ie by random sampling as it comes off the conveyor belt).
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