Amazon offers Prime members the First Act Kids' Discovery Acoustic Guitar in Natural, model no. FG1106, for $16.63 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $7.39.) That's the lowest total price we could find by $8, although we saw it for $2 less last winter. This guitar is designed especially for kids and features thin frets and low string action.