Hate to say it bro but you should find a cycle gear in your area. Tell them you want a good discount and usually they will hook you up. I do use full syn on the zx10r and use a k&n filter if i dont have any stock oil filters. I can get the equivalent of 5 quarts and the k&n for less than 40.00 bucks. Now keep in mind i sell amsoil but i dont run amsoil in the summer. But i do in the winter and believe me its not much cheaper for dealer cost than retail but during the summer. I run yama lube in the summer. That stuff is the shizznit in a 20-50. It cost me 57 dollars to run yama lube. They have cycle gear store nation wide in the U.S. if you are over seas. Id shop the internet before paying 25.00 extra dollars each time. Hell thats two tanks of gas for the weekend seat time you can have. Well i am not sure what you get but hope this gives you a better idea of what full syn oil and filter should cost