In: Economics
Yes there must be additional standard for merchant from non merchant as :
1) merchant is more specialised in term of selling and buying of products . Merchant generally prefer for selling only few products and try to maintain quality as well as quantity to maximize profits. That's why need some standard for them.
Cost is matter for merchant as they work at wholesale dealing and thus cost minimization as well as quality maintenance is integral part of merchant ,that's why they required seprarted and special standard.
2) non merchant are not stick to one or specializes products as they are seller or buyer of so many things according to their ease and changing environment of trade and profitability I.e. they can change their merchandise goods if market condition or profitability allowed them to do so. These are not work as bigger level as of merchants.they generally following traditional way of transportation like cart, jugad, thela etc not that like merchants which are use proper and modern technology equipped transportation as transportation cost matter them the most
3) proper institinalised or organization structure are exist for merchants and they work as interset group or pressure group fir such type of trader or merchants .In such a way they try to influence public policy process so that's why it's necessary to control their activities in rational way by using some standard etc..