I do, for sure, but have to say that you can't build one that will withstand the climate in the tropics for that kind of money. It needs stainless steel components and some real robust goings on. I think one could be built for 200 bucks very nicely, but 50 is unreasonable unless it's a hobby sort of machine. 'course hobby sorts of machines should be discouraged, really, as:
1) There's nothing sustainable about raising eggs as a financial loss. and
2) Here locally, gluts the market with 401lk farmed eggs, that drives real egg farmers out of business, and
3) Is just silly bad practice, as it's probably a lot more sustainable to just buy your eggs!
Exceptions, of course, do apply. And if anyone just loves chickens as pets, that's fine too. . .We here are thinning our flock way down, 'cause, we can't compete with farming at a loss for tax benefits/fashion/weed growing cover/or whatever. It suits our purposes just fine, but eggs cost 6 bucks a dozen to produce if they're any good and, well, we don't produce elsewise.. We don't cheat. We're not organic, 'tho we probably could get certification-- there's no lies, baloney, or whatever, and I promise you you'll be profit flat at 6 bucks a dozen, even if you're ingenious-- and count a dozen eggs different than I do -- which would be AA Jumbo exclusively-- pastured, which is not rated in the US. Free range has confinement, but isn't in cages. "Pastured" as a grade definition has no confinement at all. And yup, sometime a yolk will break when you crack an egg because they're too fat to support their own weight in a pan.
I think commercial poultry here will have a future, but it's tough right now as it's fashionable again, it seems it's about a 4 year wave. But feed costs will flatten the market finally this last time and I'd recommend keeping a flock small and planting feedstock so at least one doesn't go backwards.
I personally think an automated feeder is worth investing in. I built one, but haven't had the time to really install it yet. A movable device that encourages the flock to feed multiple places rather than just peck the hell out of the ground by the door. . .it's a scavenged food processor with a fan on top and a feed chute above. It must fling corn at 200 mph. . .LOL. not really kidding though.
Ultimately, back to the door closer-- I don't think its necessary here really. . .
First, a very good roost, up very high, as chickens will roost at 10 feet or above if they can get there. You stair step the roost up to that height. They'll climb, as it's about flock status. Don't clip wings! It's good, to my mind, to encourage the flying behavior if one has space-- and besides, one will get better quality meat. The roosts? I'd weld these out of steel tubing now, and they'll last forever. Nothing will climb them if they don't have wings, and I think doors are probably unnecessary if the birds are that high.
Mongoose don't feed at night-- if one loses birds at night it's either dogs or cats-- and fortunately neither wild raccoons or coyotes/foxes, which are vastly more inventive. Another bonus of the steel rack is you could charge it with a fence charger, you +/- every other rung landing, and I promise no body will be sniffing around much after the first investigation. And, the really nice chargers have an alarm, so you know when someone has been bit. Neat. It could turn on a 1000 watt infrared spotlight, if you were interested. A first class piece of equipment for any homestead.
This area has unique needs, that's for sure. . .if anyone has need for info on the above, let me know.