I don't know if this belongs more to User Experience. Pardon me if it does.
Which is more suitable for kind of a slogan:
Less for more - The word
less refers to the prices and money,
more refers to the quality and amount of the product. Can be understud as that
less refers to quality and amount of the product and
more refers to prices and money.
More for less - Same as above, just inverted.
Which would be the clearer one, that more likely wouldn't be misunderstud?