the reason and only reason sellers charge for examply 30.00 for shipping out a Kub is to save money on Ebay fees. It also looks appealing when you see it priced lower than any other one.
Due to the point in the second sentence, I disagree with your argument in the first sentence
Yeah, eBay/Paypal fees are killer, but they won't be $30-40 for a $120 item. The main reason I think foreign sellers in particular do this, is to deceive buyers such as yourself who don't notice the crazy expensive shipping. I actually don't like the idea of filing a complaint to get the money back. Though you can take issue with what the seller is doing, I say report the guy if you don't agree. If you notice the price and bid, then you should feel responsible for paying what you agree to, IMO. If you actually don't notice the crazy "shipping" cost before bidding, but do notice before paying, then I would contact the seller first. If he was willing to let you out of paying, I would let it go, if not, then and only then would I justify filing a dispute. Just my perspective, though.
Personally, I try to charge about $2 extra in my "shipping" costs on items I sell on eBay just to cover a part of my fees. As eBay keeps raising fees, I understand the need to pass the buck to the customer (why do we have sales tax, after all?). But extreme price gouging on shipping is pretty despicable, IMO. Apart from deceiving customers, eBay does deserve something for the service it provides, and until a real competitor shows up, if you don't like the fees, then I say, don't list auctions. EBay sucks, but sellers shouldn't screw them over just because eBay screws sellers over.