OK this is one of the cheaper and not looking cheezy builds I have seen for an eggbot. The sides are cut from wood (pattern available). Base is maker bar. Overall a simple build. And…instead of an arduino, its using its ESP32 cousin. So wireless control too. The author has a “kit” you can buy, but I can’t figure out the cost, if the cost is only for the daughter card, or the whole thing.
https://www.instructables.com/ESP32-Wifi-Eggbot-Drawing-Robot-Plotter-Pen/