If a $500 Garmin Edge is too much for you then why aren't you looking at the $199 Garmin Edge 130 plus?

Don't worry about all the extra features. You don't have to use the extra features you don't like. But many if not all GPS cyclometers are going to have those things now. So just pick a price point and compare models at that price point. I'd stick to the popular brands, Garmin, Wahoo, Lyzene and maybe a few others I've forgotten. Although my younger son has it now, my old Edge 500 from back circa 2010 still works. So do a dozen or so other Garmin products I have going back to the early 2000's. Only one ever crapped out. It was under water two weeks after hurricane Katrina sunk my boat. However we floated the boat and used that chartplotter for a backup for over a year, maybe several years after that till it finally quit.