If you want a special exception made, you may ask ahead of time. Unless you get a positive reply, you follow the rules. It's pretty simple. There are over 1.05MM unique viewers on this site every month, and thousands of posts a day, and we don't have the resources nor the inclination to ask "Why did you break the rules?" every time it's done. It's like a speeding ticket. Context is not important. You were either speeding, or you were not. The rules are very simple, and are designed to make the B&S forum useful for both sellers and buyers. Prices, for example, are useful for buyers and sellers to gauge the going rate of an item. Just read and follow the rules, and you'll be just fine.