I’m in the UK and use Buyee most of the time, but for certain purchases I’ll use vvJapan (e.g. for buying items from websites Buyee doesn’t support or buying items Buyee has (often mistakenly) blocked).
Going through the buyee website should translate yahoo japan but I usually search using Japanese Kanji.
I use white rabbit express to buy things off the Japanese Pokemon center online.
Hope this helps
I regularly do pick-up services whenever i go on vacation in Japan, mostly pokemon-related stuff, although i also get non-pokemon orders from time to time. Its nothing too serious, just enough to cover some trip expenses or to pay for whatever card im purchasing for my personal collections.
Other people do it as a serious side-hustle, and the usual commission rate is 10%, but that can go down depending on the value of the item.
Edit: im not advertising my services btw, just giving an idea to answer your question.
Hello. Thanks for the interest, but I wont be doing any unessential travel for the foreseeable future until this whole covid pandemic is 100% done. Also, as others expressed, there are multiple services available via websites. I believe there is already a dedicated thread for such middleman services.