This HDX brand floating chlorine dispenser appears to be nearly identical to the ones that I purchased from my local pool store, but the HDX brand is half the price.
The plastic is thick and the dispenser appears to be well made. The lid rotates on and off easier than the my current pool store model, and the 'control ring' at the bottom easily slides open and closed.
In my pool, this style of chlorine float seems to last for 2-3 years before the top starts to oxidize and fade and the lid becomes hard to remove, so if this HDX brand model also lasts that long, it will be a great bargain given the much lower price.
Pros: Durable, High Quality, Sturdy