Rx5, you are not far from Korea, and those sensors are EVERYwhere, here. I think, also, many, many chips are produced in your country. Isn't there somewhere you could purchase?
Also, if you are just wanting one or two sensors to play with, there are myriad devices for five to ten dollars (or even less,) that will give you a nice case, sensor, and freznel (spelling?) lens...
I think it would help you, and everyone else, if you changed your location status. I know the positive thinking behind using Earth, however, for practical reasons, you should give your location.
Regards,
Robert