Amazon offers the LEGO Friends Amusement Park Roller Coaster Kit for $74.99 with free shipping. (Toys"R"Us and Target charge about the same price.) That's the lowest price we could find by $5 and the best deal we've seen. This 1,124-piece set features a roller coaster, Ferris wheel, drop tower, entrance booth, dining area, and four mini dolls.

Update: The price has dropped to $74.59. Toys "R" Us charges the same.