Are they to be taken with a pinch of salt? Looking at the reviews for cheapish belts, I notice some say they're great value and others say they're rubbish and lasted no time.
Aluminium Foil 18"
"When I wrap my naked body in this lush, extravagant foil I feel transformed, and I wander the streets, mostly at night, fighting crime..."
I have always found the reviews to be very useful.
There is always the possiblity that manufacturers and suppliers can write good reviews of a bad product. In reality, those usually stand out as fake especially the more reviews there are.
Genuine reviews are of course subjective. What one person might write as a pro, another might think it is a con.