I have no idea about the rent but the Tanger Outlet is a better retail venue because it has far more choices and it's easy to get to, even if you are not actually visiting the Tilton area. There are value choices from affordable (Walmart) to affordable high end (Wilson's Leather, Brook's Brothers, etc.). They also have some really good sales around and after the holidays and through the year. There are also a bunch of stores nearby (Lowes, Home Depot, Walmart, Market Basket, Kohl's, Staples, Walgreens, BJ's, VIP Tire, etc.) and a wide variety of dining including Tilton House of Pizza the #1 Pizza place in NH (WMUR)

.
What's the new addition by the Belknap Mall? A Goodwill store. That should tell you something.