Hamilton Lane / Fund DD Pricing

Would anyone have an idea of how much a firm like Hamilton Lane, or similar firm, or even a much smaller firm charges for reviewing/conducting DD on one PE or other private fund? I know companies sometimes pay for a third-party perspective or report on a fund, or fund landscape.

Came across an opportunity to do fund selection type work paid on a fund-by-fund basis (exact payment structure TBD) and just looking for some comps of how this type of work is usually priced when done out of house on a fund-by-fund basis.

Any insight into how this work is structured / paid would be super helpful!

Thanks!