if it is dearer than new why can this not be stated?
It can. Just directly and more helpfully by email to the OP. If they have no email address available then they are breaking the rules and you should report them to us.
To your final point on a rule about being the cheapest on the internet before you sell, what happens if a shop does a bogof deal making it seemingly half price? What if the online seller is in Hong Kong? But with postage it's more expensive or even riskier as it's an overseas sale? We'd have to literally basket the item and follow through to checkout before we could determine if it's in breach of the rules. there's so many instances that would make enforcing that rule impossible. apart from the fact I don;t agree that a price must be cheaper than new in the first place to be sold.
"These bars as as new. Cost me £50 but I'll sell them for £30 posted and I'll throw in a box of black magic chocolates".
Same item sold on CRC for £29 (postage to be determined only at checkout) plus no chocs.
Would that deal break the rule? I like chocolate. I may well like the seller! he may have sold to me before and I trust him. I'd maybe like to give my money to someone in the community even if there's a chance it may be more expensive to do so.
There are so many reasons that may influence a sale that go beyond just the advertised price.
If you think it's being overpriced though then email the seller and tell them.
Just don't slap a poster telling him that on his shop window.