A quick search brought up this monitor and it's funny because I bought this monitor 5 years ago for my husband. He's still using it and it's still a good deal for a quality monitor. Speakers built in.
https://www.amazon.com/ASUS-VX248H-1920x1080-Gaming-Monitor/dp/B00GMGHCVG/ref=sr_1_2?ie=UTF8&qid=1546912916&sr=8-2&keywords=asus+vx248h+24+led+monitor
edit to add: pssst I used a fold-up card table + chair from Walmart for many years until I built a desk from IKEA. :p Desks are expensive, no doubt... But if you do end up using a flimsy card table, you may need to have the tower on the ground (not on carpet) because of weight.
