Hippocrates and Galen advanced the concept of humorism, a theory which held that we get sick from imbalances of the four basic substances within the human body, which they identified as blood, phlegm, black bile and yellow bile.
If I bought a pair of $190,000 Focal Grande Utopia EM and found out the beryllium isn't any more pure than a pair of $2700 speakers, I'd be very upset. I would also be upset if the beryllium tweeters in my $190K speakers cost less than diamond tweeters in a pair of $5K speakers.
You can't compete on price forever, adds Buxton, whose database exceeds 140,000 shoppers in North America and Japan. A mystery shopping program can be set up within two months with cost ranging from $50 to $500 per shopper visit.One source for finding a certified company is the Mystery Shopping Providers Association MSPA, which has 275 members worldwide.MSPA estimates about 1.5 million mystery shoppers operate in the US.It is not uncommon for a mystery shopper to work for five or more providers at a time in any given month. A mystery shopping program in and of itself does not change behaviors, says Warzynski.SPA estimates about 1.5 million mystery shoppers operate in the US. It is not uncommon for a mystery shopper to work for five or more providers at a time in any given month. A mystery shopping program in and of itself does not change behaviors, says Warzynski.