Starting today, Nikon changed their instant US rebates and included several new lenses. The new rebates are "stackable", which means that you can purchase more than one lens and still take advantage of the savings. If you don't need a new body, you can get the cheap D3100 in order to qualify for the savings and then sale it. The qualifying Nikon DSLR bodies are: D3100, D3200, D5100, D5200, D7000, D7100, D600, D800 and D4. This offer will expire on June 29th, 2013. Most of those listings qualify for free shipping and 2% in rewards.
Similar savings are available also on Amazon: