Expensive But Works as Advertised
343467
I used it on a rusty battery terminals after cleaning them off. It works fine at preventing rust and corrosion. The only thing is that the bottle is relatively small and that I think corrosion and rust can be prevented using many kinds of grease. There may be no need for this special and costly "battery protector and sealer".
1545204
I resisted the hype for a long long time before finally getting tired of replacing vacuum cleaners every two years. While this unit is relatively expensive (hence 4 stars), it does work as advertised. I will also add that while it does have a large amount of suction, it seems quieter than my other vacuums.
4174304
Pros-it works
Cons-it cost too much

Overall- After reading about the cheaper one decided on this one. It hasn't failed yet so I assume it was worth it
4884925
Works as advertised, but wow, is it every expensive.
If you really want to save a couple bucks you can use gorilla tape.
907640
Still working out the usage but it works as advertised.
225508
Functions right but very expensive relative to this type of aftermarket component.
11911
Expensive, IMO, when compared to my two other purifiers, but it does work. Mine got so clogged that it suddenly started making a high pitched air noise as the cleaner was struggling to move air through it. That's when I finally noticed the filter light was on. Adult house, no kids, no pets, you wouldn't believe how much crap you pull from your space!
4938159
It's a little pricy for what it is, but works well and is a quality product.
4454730
Works well.  A little pricey, but well made.
4369833
A good product that works well but more expensive than comparable wall chargers for other tablet computers.
433153
This thing is pretty expensive but it really works quite nicely! Made water from questionable sources safe to drink!
I wish it charged via USB-C but perhaps the manufacturer will release an updated version sometime.
Otherwise, works like a charm and highly recommended to any person planning on spending time in the outdoors!
4388636
Expensive - but that's for a good reason. If you have a setup that could benefit from this, it's already so expensive that a $130 dock is drops in the well. Mine's connected to 2 1440p displays and an 8-port USB-3 switch, making my Macbook into a pretty cool desktop.
2308736
Expensive for a simple AC adapter, but effective none the less.  It gets the job done.
3233268
Works very well and easy to attach.  Saved me from buying additional cords.  Bummer though that it is so expensive.
374508
Works well, but didn't seem to last as long as it should, which makes it pricey for what you get
874953
Works as advertised, easy to install, not so easy on the wallet. This spool is all about convenience and it gets 5 stars for that. It does seem like too much money for too little string and I will try to wind my own next time. But, the product works well.
3804398
expensive but works great i hang 2-3 large $10 Target towels at a time and it supports them just fine.  I hang them on my glass shower door.