Checking to see if this is available at this price ¥3,700 instead of ¥9200
This green side of Suruga-ya, with “katori” in the url, is the side that you sell the doujinshi to Suruga-ya. In case, if you have this doujinshi and want to sell it to Suruga-ya, Suruga-ya will pay “3,700円”.
The correct price to buy from Suruga-ya is “9,200円”, you can check it on Suruga-ya’s own page: https://www.suruga-ya.jp/product/detail/ZHOA15710
Any other questions just let me know!