What is a Master Replicas DV ANH full size saber worth?

Like the title says, I don't see any comparable prices on Ebay or on the Internet...

 

It's worth whatever someone is willing to pay ;-)

But as that's not particularly helpful, I've used this site several times when trying to work out a buying budget. No idea how up-to-date the figures are though.
http://www.toytracker.net/master/tracking/master.html/sabers

 

Just run an advanced search on eBay and click "Sold Items". Voila.