What was advertised in a colonial American newspaper 250 years ago today?

“Advertisements of not more Length than Breadth, are inserted Three Weeks for Three Shillings.”
Thomas Green and Samuel Green launched a new newspaper, the Connecticut Journal; and New-Haven Post-Boy, on October 23, 1767. Like many other colonial printers, they used the colophon not only to provide the particulars concerning publication but also as an advertisement for the newspaper itself: “All Persons may be supplied with this Paper at Six-Shillings a Year.”
Yet colonial newspapers rarely had sufficient subscribers to make them sustainable business ventures. In addition to subscriptions, advertisements accounted for an important revenue stream. To that end, the Greens also issued a call for advertisers in the colophon. In the process, they provided a relatively rare indication of the costs of advertising in eighteenth-century newspapers.
How much did it cost Michael Todd to place an advertisement for the “GOOD Assortment of Winter Goods” at “his Store in New-Haven” in the November 13 issue? According to the colophon, “Advertisements of not more Length than Breadth, are inserted Three Weeks for Three Shillings, and Six-Pence each Week afterwards; and long Ones in Proportion.” Todd’s advertisement was approximately half again as long as it was wide. He would have paid four shillings and six pence to run it for the first three weeks and then another nine pence for each week thereafter. (Todd and other advertisers received a discount for subsequent insertions because the labor of setting the type had already been completed.) If Todd ran his advertisement for only three weeks the cost would have been equivalent to three-quarters of a yearly subscription. Running it for a fourth week would have raised the shopkeeper’s cost (and the printers’ revenue) to the same as a subscription.
Advertisements were indeed good for business, especially the printing business. The amount of space devoted to advertising in the Connecticut Journal gradually expanded during its first month of publication, a development the Greens welcomed and sought to further cultivate in order to improve the prospects for their new publication. They met with some success. The Connecticut Journal continued publication for more than fifty years, issuing its final edition in December 1820. Advertising filled one-third of the space in that issue.