I would prefer to be charged $3 for every 10$ if I'm not ever going to get involved in this and the money will hit my bank account the first week every month. I would prefer to get charged $43 for 1 in every 100 transaction if I employ people who handle that for me.

So the $43 thingy is more like at least $3000 + (43$ per 1 in 100) and (2$ + %3) per + handling VAT remittence per + handling local laws per(which means you will likely need a few more highly specialized employees or services that you pay hefty cuts approaching Apple).

Taking money from people anywhere in the world in exchange for your product or service is trivial on Apple because they indeed employ a lot of people that deal with this stuff, thus %30 is fair IMHO.