A ROAS has many aspects that influence if it is good for your business or not, such as profit margins, expenses, and the health of your business. While there's no one-size-fits-all answer, a common benchmark used for ROAS is 4:1 ratio — $4 revenue to $1 in ad spend. As expressed before, this will depend on the position and health of your business.
Before a business can set a ROAS goal, it first must identify a set budget and the profit margins. If you have a large margin, this means that your company can afford a low ROAS, whereas a smaller margin identifies that the business must have low advertising costs to stay profitable.