Hmm it's hard to state when something isn't quite what you expected. It gets right on my tits when you go to the trouble of paying someone straight away and it rolls into weeks rather than days to arrive, but i try to recognise that people have busy lives and things delay them that's out of control, other times it's just bad etiquette. Keeping people updated as to delays in posting without being chased goes someway to alleviate that feeling of having the piss taken.
Some stuff i've recieved has been bobbley and disappointing to say the least, i might have bought it anyway with honest descriptions, but opening a package up and seeing faded and bobbled stuff is a bit off. Again, i just put it down to experience, as you can't expect brand new standard for a few quid, it's just disapppointing.
Also, whilst i'm ranting with you, it really REALLY annoys me when people post something up for sale, you post a reply to offer/buy/ask a Q and they never come back on to the post again, not even to say they've changed their mind about selling. I've PM'd a couple of people who have done this and again, completely ignored. And they've been online and posted elsewhere too. Annoying!
BUT i've had some really lovely stuff on here, most people are great, and i always look for certain sellers. You just make a mental note of who to avoid buying off again!