New Harbor via Amazon offers Amazon Prime members the Star Master Star Projector Light for $4.31 with free shipping. (Non-members can spend over $25 to qualify for free shipping; otherwise, shipping adds $5.58.) That's pennies over our August mention and the lowest total price we could find by $2. It features two buttons; one button turns on the white stars, while the second button turns on the red, blue, and green stars. It requires three AA batteries (not included).

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months.