See related link.
You need to contact Remington for an answer.
$350
Remington 870 Express Super Magnum.
100-400 USD
100-400 USD depending on condition.
$139.95
Check the Remington Society of America, date barrel codes and location. http://remingtonsociety.com/rsa/questions/barrelcodes
The average price of a Remington 870 Express Magnum pump 12 gauge shotgun "brand new" is about 300-450 dollars. I got mine used for $250
150-225 USD They have the internals of a Wingmaster. Fit and finish of the working parts puts them FAR ahead of any Express. They are as smooth as any Wingmaster. The exterior receiver is not polished as well as a Wingmaster, and the wood is cheaper. This was Remington's first attempt at producing an 870 to a lower price point, and unfortunately didn't create as much profit as the rough-as-a-cob Express.
@ 50 USD
It is the 100th Anniversary Edition for Remington's making of the 870 pump shotgun. It runs for around $1200 and is a limited edition item. The Premier Dealer Wingmaster also has engravings on each side and a gold trigger. It has semi-fancy claro walnut stock and forearm.