The average transaction size for main street businesses and lower mid-market businesses can vary greatly depending on several factors, including the industry, geographic location, and size of the business.

Main street businesses typically have lower annual revenues, typically under $5 million, and are often sold for less than $10 million. These transactions are often owner-operated and have a more limited customer base and revenue stream.

Lower mid-market businesses, on the other hand, typically have annual revenues between $10 million and $250 million and are sold for prices ranging from $10 million to $500 million. These businesses are often more complex and have a broader customer base and revenue stream.

It is important to note that these are rough averages and that actual transaction sizes can vary greatly depending on the specific business and circumstances of the sale.