Walmart offers the LEGO Architecture London Skyline Building Set for $31.99. (Amazon charges the same with free shipping.) Pad your order over $35 to bag free shipping; otherwise, shipping adds $5.99. (In-store pickup is also available.) Excluding padding, that's tied with our November mention and the lowest price we could find now by $2. This 468-piece set measures approximately 5" x 11" x 3" when assembled and features the National Gallery, Nelson's Column, the London Eye, Big Ben, and Tower Bridge.