Do you have a link to cheaper alternatives?
I assume you mean "cheaper but decent."
In my youth I used blue plastic pool "skimmer" nets and Do-It-YourSelf contraptions with a wire hoop, some mosquito netting, and a bamboo stick. Those were cheap, but not very effective, and couldn't hold up to much usage. And in Florida you can easily catch some decent fish with a regular 4x6 or 5x8" aquarium net. Bluefin killies, heterandria formosa aka the least killiefish (except it isn't, it's a livebearer), young flagfish, mollies, damnusia aka mosquitofish, Elassoma aka pygmy sunfish, golden-ear killies, etc., simply by sweeping through shallow weeds in wet ditches, creeks and ponds. A regular aquarium net won't handle a lot of that before it rips, but it can catch some fish worth keeping.
I think some people were pretty happy with a wood-handled Cummings dipnet a few years ago, but I don't know where they were getting them, and I'm not really sure they're significantly less expensive. CummingsNet has a website, but with a three minute scan I didn't see anything quite like what I recall people using. Per my recollection, Dustin used to use one, and maybe still does; hopefully he'll chime in.
But the Perfect Dipnet is very popular for a reason, it's a VG net and a VG value.