pullers can be purchased though midway.com, i got one for my 500, and a buddy of mine got one for his 470, they work great, and are super fast.

http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=680804

and the collets are only 9.89 each. they have it for .475 and .500. the .500 does work even though the 500NE is .510, it just grabs the tip of the bullet and out it comes.