It really depends on the market. I have Premium Financing shops that their average case is roughly 70K in target premium.
IMO the cases that you are referring to is that of Advanced case design and COLI's.
Advanced case design is for people with estate liquidity problems.
COLI's are some times referred to as "Key Man" insurance, and are designed to provide either a business owner or a Key employee with insurance for a variety of reasons.