Electronic keyboard pianos starting at just $20. The cheapest ones that look like they are for kids though. The cheapest MIDI keyboards are about $50. In total there are over 260 electronic keyboards here.

Large selection of musical instruments, including over 950 electronic keyboards, about 200 digital pianos, and more. The cheapest digital pianos are under $20 but the cheapest best-selling model is $120. Lots of cheap keyboards as well.

Shop for cheap keyboard pianos, electric pianos, and accessories at Target, which range in price from $7 to $2,199, including items that are discounted up to 15% off the original price.

eBay has a great selection of keyboard pianos for both kids and adults from brands like Yamaha and Casio. eBay's selection of products changes every day according to new listings and sales, but there are currently 1,000 electronic keyboards that cost $50 or less.

Groupon has great savings on cheap keyboard pianos for both kids and adults from a variety of brands. These items are marked up to 55% off the original price and the availability of these products depends on your location and the store's daily deals.

In addition to a nice range of other musical instruments, Overstock has a nice variety of electric keyboards for both kids and adults to play on. Keyboard pianos of all shapes and sizes range from $19 to $699, including 30 models that cost $100 or less.