$7900 for 10 full days of hosted training for an entire team seems somewhat cheap. Be conservative and say that each day they had two designers helping them out

$7900 for 10 full days of hosted training for an entire team seems somewhat cheap. Be conservative and say that each day they had two designers helping them out at a cost of $50/hr for 6 hours ($6000) and then add whatever costs and overhead is involved in hosting a team for 10 days. Top-notch designers who are good enough and prepared enough to train are normally well more than that hourly.