well, as you know you could pay with a credit card. i would be surprised to know that you run a bussiness and don`t have it. but i agree that not having paypal in Poland is a real pain in the a... but there`s a tiny spark of hope - recently citizens of Poland has been allowed to register and send payments through PayPal, so maybe in a near future we will be able to receive them as well.
yes, we know that directly using someones work is a \"no no\" . but first of all until Marek gets the payment it`s his (still he can`t reproduce it, sell etc without the permission of the owner of the original concept if I`m right, will check it). that`s why i wrote that if Marek decides to sell it , he will change it considerably, so it will be different from the concept and more to his liking.
currently when he gets a commission he solves such problems in a different way than that you suggest (agreement fair for both sides, pm me if you`re interested), altough yours seems to be fair as well.
BTW - maybe we could switch to pm`s? As Gamers Quest said washing dirty laundry in public is no fun.