Amazon offers Prime members the Lionel Imagineering Non-Powered Train Set in four styles (Batman pictured) for $29.99 with free shipping. (Non-members can qualify for free shipping with orders of $35 or more; otherwise, shipping adds $7.48.) That's the lowest total price we could find by $4. (They go for around $50 or more elsewhere.) Each set includes two engines, two gondola cars, four curve track pieces, and six straight track pieces.

Orders placed by December 22 are guaranteed to arrive in time for Christmas via Prime shipping.