I've just found this website www.focalprice.com and think it's quite good bargain.
The website is from the States if my add on gets me right and they've got a lot of accessories of macbook including Soft Sleeve Carry Bag Case Cover for Apple 13.3" Macbook, my major interest
And they charge me nothing for shipment unless I choose EMS Express which I have no idea what the difference is. Of course I'm willing to pay 12 bucks for shipment if it's faster and more reliable than Air Mail.
The website is from the States if my add on gets me right and they've got a lot of accessories of macbook including Soft Sleeve Carry Bag Case Cover for Apple 13.3" Macbook, my major interest