We found 1 Reddit comments about Feather Professional Artist Club Ss Razor Wooden Handle. Here are the top ones, ranked by their Reddit score.
The straight razor is probably going to be the most difficult, but if you have someone here who can recieve it, no problem. Safety razors are available as well.
Straight Razor: Amazon.co.jp
Safety Razor: Amazon.co.jp... I may have actually seen saftety razor blades at regular drug stores.
Shaving Brush - Amazon.co.jp
etc. etc. Most of the stuff can be found searching in English there. As to where to buy it on the street, check this site (Muhle stuff, but I assume they carry lots of other stuff as well)