Eastman mandolins are by far the best value these days. They're not the cheapest, but considering the quality you get, they are well worth the price. This is my opinion of course, but it is shared by many.
Agree that Eastman is the best import going nowadays. Beats Kentucky, Morgan Monroe, etc in the same price ranges handsdown.
Check out this guy
giannaviolins.com
For something really on a budget, try several of the simplist A model w/solid top Kentuckys. Every now and again a jewel turns up with a sound 3 to 4x the price.