Do your prospects ask for a specific amount of LTCi, or do they look to you for advice on how the coverage should be structured and how much they might need?
They (you) may have read the studies of how much a nursing home costs, which might be a starting point. However, the costs can vary as much as 100% between the highest and lowest cost areas of the US. Thus, the first step might be to inquire where your prospects plan to reside in their retirement.