The entire commerce chain from producer to client should establish some milder condition, with facilitating purposes for the entire market. I mean, most customers don`t know about the changes in regulations for dealers in every commercial field. They simply want to cover their needs as clients and go to, let`s say, yourlist.com
, or any other giant online sales engine and look up for the desired products. Variations in prices come from the authorities who regulate commercial activities, not from producers or dealers most of the time. We only see these fluctuations without knowing their causes unless we dig more and look up for further insight.