Travel to Japan for 5~7 days, join a group, and want to buy something for a house in Akihabara. How much will it cost?

What a coincidence! My friend will come back from Japan tomorrow. Tokyo and Hokkaido are recommended for group tours 10 days or so, 6000-8000, but there are many places to shop and spend alone in Japan. It's up to you. You said 20 thousand yuan, as long as the things you bought are not too expensive, there is no problem.