No.
Any member is free to post an advert. Providing that it does not break the forum Classifieds rules, i.e has actual pictures and prices (in which case they get a Moderator warning to amend their advert), and the Moderators will check. It is the sellers's choice regarding the pricing and terms. However, a badly written advert, lacking details and good pictures is unlikely to sell. If you do not like the offer/terms then do not buy. If any member feels that an advert does break the rules or is suspect, then we recommend that they report it for Moderator attention.
This topic, "Mack's airsoft dreamers", exists in a large grey area between poking fun at an advert and just being picky on pricing. It does give forum members the opportunity to flag up crazy pricing or potentially poor value adverts. The one downside is that not all members know what they are talking about when making posts here. Luckily this topic is mainly self regulating, needing minimal moderation, and serves a useful purpose.
Jedi's advice, caveat emptor, always do your due diligence as a buyer. And if in doubt make a topic to ask some questions that the community can help answer.