It depends on dorayaki. I think that it is roughly 100 to 300 yen.
I have answered a similar question before.https://hubjapan.io/questions/what-are-taboos-in-japanese-culture
I think good to buy on some big department stores. For example Takashimaya or Isetan food floors. But I don't know that is "best". Please try search the information on web.
There are good bars near Shinjuku-Sanchome station.For example Caruso.https://www.tripadvisor.jp/Restaurant_Review-g1066457-d9964574-Reviews-Barcaruso-Shinjuku_Tokyo_Tokyo_Prefecture_Kanto.html
My recommendation is Kamakura.The area is historical and beautiful.https://hubjapan.io/tags/kamakura
If you will go to Tokyo, my recommendation is Ippuku in Ogawamachi.My most recommended menu is curry udon in Ippuku. Off course simple udon is great also.https://www.yelp.com/search?cflt=udon&find_loc=%E5%B0%8F%E5%B7%9D%E7%94%BA%E9%A7%85%2C+%E5%8D%83%E4%BB%A3%E7%94%B0%E5%8C%BA%2C+%E6%9D%B1%E4%BA%...
Yes,Tokyo free guidehttp://www.tokyofreeguide.org/Japan Tour Guidehttps://tourguide.jp/tourist/login
Sawara has a traditional atmosphere, near Narita. (but need more than 30 minutes on one way)However, stores may be shut down at night, so what you see from the evening may be limited.Narita is famous for eel. If you do not eat eels elsewhere, I think that it is good to eat.Narita's mascot is Unar...
I think that It depends on what you are interested in.If you are interested in gourmet, there are many things in Tokyo.Personally, I will be able to experience Japan more than the modern city Tokyo, Tohoku et al. Tohoku has nature. Of course the food is delicious.I think that Kyoto can also exper...
Kotobukiya is big shop.http://en.kotobukiya.co.jp/kotobukiya-akihabara-store-floor-guide/Maybe you can find many shops when you walk around in Akihabara :)# Nakano Broadway is also famous for anime shop.
I have never used this service so I do not know its reliability.
I think that it is almost always to buy it at a regular department store.The department store will sometimes do sale as well.If it is second - hand goods, I think that Daikokuya etc. are famous.