Forum member sweener informs us that Amazon now has the LEGO City 7939 Cargo Train back instock. Even better, it has been further reduced from $139.05 to $133.91 (reg.$179.99). Savings works out to be 26% off. Free shipping and no tax for most states.
If you missed out getting the LEGO Star Wars 10188 Death Star set earlier, they also have it back instock for $335.99 (reg.$399.99). More of their hottest LEGO deals can be found here.
