Without doing a count but using gut reaction, I would say that around 40% of the forsale ads, when first submitted, get disapproved because there has been a clear failing with the rules.
And yes we are still seeing ads being placed in the wrong sub-forum - the two 350/370 parts for sale were created to meet member's wishes
Then there are those where items are being offered for free - they might not not tick all the rule boxes, (and certainly on price alone ) but we try to use a bit of commonsense. And yes, if the thread turns into a bidding/auction style event then it is likely to be locked.
But it will be good to see what the membership feel about how the rules are being applied