Maintaining any reel mower can be a pain. They come in 2 flavors, barrel ground and bevel ground. Professional mowers ha e bevel ground blades on the reel and homeowner grade ones usually have barrel ground reels. You can tell the difference by looking at the edge of the reel blades. If they are flat it is barrel ground. If they are sharp it is bevel ground. They are sharpened and maintained differently. The cheap push mowers have the blades riveted to the reel and not adjustable. If you get a damaged blade that interferes with the bed knife a real PITA to fix. To keep blades and bed knives sharp on a bevel ground mower you need to back lap the reel. On a cheap barrel ground mower you sharpen the bed knive but when the reel blades dull and round over you have to remove the reel and have it reground. Good luck with that. I have a Locke Triplex reel mower. Will manicure grass like carpet but just a pain to keep sharp. If you don't know how th maintain a reel mower you won't like it after the reel and bed knife get dull.
Some real effective and practical cordless electric mowers on the market these days. Reasonable prices too. Almost no maintenance. No gas, no fumes, hang it up on the wall when not using. Hard to beat if it fits your needs.