There are two payment structures I use for newly commissioned reports:
Hourly: £35 per hour inclusive of all fees and taxes – ideal for open-ended research processes and complex cases
Prix fixe: a menu of pre-agreed prices to allow greater predictability of expenses. These prices are:
Country schedule based on existing research: £150
Simple single-issue research (e.g. “mental health treatment in Pakistan”): £200-300
Complex or case-specific research (e.g. “verify the credibility of this statement using country evidence”; “analyse the safety of this person given their minority status”): £500-1000