Good advice. Make sure you recoupe your costs - unless you are prepared to carry some of the cost as a strategic decision for your company. I am wary of the fa

Good advice. Make sure you recoupe your costs - unless you are prepared to carry some of the cost as a strategic decision for your company. I am wary of the fact you say 'promising new startup'. I would err on the side of caution and assume it isn't the giant success they(/you) hope it will be. As a result, I would spread the risk: - Ask for a 'normal' payment, within their budget, trying to cover at least 50% of your cost estimate. - Then be as daring as you may negotiating your transaction cut on the gross. So, I would reduce my risk as much as possible - who knows if it will take off?