I generally love this product, but I have a couple of reservations about it.
First of all, you must must must make sure you cover yourself effectively, and the product instructions recommend a second application on day 1. If you miss any small part of your body, you will get severely burned. The product is yellow at first, but dries clear, leaving a slightly oily film for an hour or so until it soaks in completely/washes off a bit. This helps with effective application.
If you get this in your eyes, you will suffer streaming itching red eyes, so be very careful around the eye area especially with kids. I found that anti-histamine tablets and sunglasses helped reduce the sensation on a couple of occasions where I was not careful enough, or sweat washed it into my eyes before it had dried enough.
The benefit of this product is that it is highly effective at preventing sunburn when used correctly and really can be applied once a day, which is great for avoiding the hassle, worry, tears and baggage with traditional sunscreen products and lets the kids just get on and have fun.
I personally think the spray is a bit of a gimmick - you have to rub it in by hand anyway and it can miss/blow off resulting in wasted product, but my wife prefers a spray, I don't really know why.
This is a good price for this product. One bottle lasted about 10 days with our 2 and 4 year old boys, although we put them in scratch suits so only did their arms legs and face/neck.