I’ve got 3 days coming up in Osaka in November. Have only had day trips there from Kyoto previously so looking forward to having more time there this time. There are stacks of shops around Namba and Shinsaibashi. I buy a lot of 60’s and 70’s rock and stores I’ve liked have been Forever, Hanky Panky and Redbone. They’ve had my kind of stuff at reasonable prices. King Kong and Timebomb are both huge shops and just around the corner from each other but I didn’t have much joy at either on my previous trip.