I was just thinking about providing one at one of my rent houses that doesnt have one and trying to keep the cost down.
Never compared prices, but had some rural Osage county friends buy the big fiberglass models that are basically US military storage containers with a lid on them.
One had some heavy runoff from rains a couple of years ago and one end came up out of the ground.
Nothing wrong with the fiberglass models, its making sure the installation involves enough concrete to keep it from floating up.