You will probably have to spend an afternoon shopping around for a keyboard that meets your standards. Musician’s Discount in Cutler Ridge has a reasonably priced variety. Miami Music Works in Pinecrest does, too. Ask when their new models will be in store. Usually, the small Mom & Pop stores will put the older models on clearance to move their inventory. If you prefer big chain stores, Guitar Center, Best Buy, Sam Ash, Costco, and BJ’s Wholesale all have keyboards for sale.
Ask your friends, neighbors, relatives, and survey the weekend yard sales. You never know what people have stored away that they’ve forgotten about.
Shop online at Amazon or eBay.
I am just one of many piano teachers who will work with a child on an electric keyboard. Please always let your prospective instructor know what your learning tools are.
Benches are preferred over chairs because they supply the correct height, which determines how straight the wrists will be. A sturdy, adaptable bench will be between $40-$120.
Stands are preferred over tables. They come in either single or dual braces. Dual braces are superior and worth the price. The frustration that is brought by the wobbliness of a single brace is not.
Above all, keep your child comfortable, in a good posture with the keys of the instrument level between his lowest rib and his belly button. Elbows should be no less than a 90 degree angle.