That legend is true in some products. Medicine, the lower the absolute cost, the higher the quality. Not totally in every way, but in general. Especially for pills, that hot new patented pill that solves all your problems is worthless, it can only compete with the out-of-patent miracle drug because of P-hacking statistics and super super hot pharma reps "calentando la sopa" to the doctors prescribing it. Like if Ratipooson tm brags about being 41.3% effective instead of 40% effective and requires a team of cheerleaders to get your doctors to prescribe it, and the pill from the 50's has a grouchy fatass with a mustache that only goes in person every three years to check up on stock, obviously the old pill is categorically superior. The statistics are lies, and anyway, the doctors ought to think of how good the patient's money is for him, what he has to do to get that money, the impact of that money on his health versus that (fictional) 1.3% improvement.

I suppose I have to translate that. "Calentando la sopa" means heating up the broth. Like sexual innuendo, teasing, they're super super particular about wearing clothes that get the doctors thinking about sex without admitting they want the doctors thinking about sex.