let say i want to sell advertisement space for website but depends on bid. Let say, the bid start with state -> USD1 per hour, country ->USD10 per hour,
continental ->USD 100 per hour, worldwide -> USD 1000 per hour. So if he had choose \worldwide, how can me want to construct logic base on formula if let say space for Asia continental already ppl bid. So if he bid worldwide, he has lost potential customer in Asia if there has ppl used before. Then, for each advertisement from 7pm to 8 pm i have 10,000 ppl entered at the same time. So how can me to set EOL? Meanz let say Microsoft want to take that advertisement slot, they make a bid then they buy with USD10,000 per hour. So, how many my Expected Opportunity Loss if Microsoft withdraw at last minutes, meanz they cancel to purchase it.

Anyone help me.. plzz understand it. i hope u understand me