Fetching details from the dictionary...
trade; business; trading; dealing
turnover; sales; takings
商いの基本は信用だ。
Trust is the foundation of business.
毎日欠かさず店を開けるのが商いの心がけだ。
Opening the shop every day without fail is the spirit of good business.
江戸時代の商いは口約束と信頼で成り立っていた。
Trade in the Edo period was built on verbal agreements and trust.