You might not find one because there's no such thing as a PAL 3DS, PAL is an analog television standard and the 3DS does not conform to it because it's not an analog TV console. You probably mean an European 3DS though, in which case I suggest eBay, which is the easiest way to get goods from overseas. Tell the seller that you'll pay extra for worldwide shipping and you'll get yourself a 4.5 3DS in no time. Not sure about XL's since they're apparently in high demand, but you should be able to find one. Can't forget about Trading section either, other members of GBATemp could hook you up with one.