They are making trips to check out the merchandise on offer.
他们奔波各地，检查供售商品。
《柯林斯英汉双解大词典》
2
Note the form of the contemporary transfer order known as a check:"I, Murray N. Rothbard, direct the Bank of America to pay to the account of Service Merchandise 100 dollars."
转帐用今天的话来讲就是：“我，穆瑞·罗斯巴德，通过美国银行向某商人的帐户支付100美元。”
3
Please check your merchandise. I'll wrap it for you.