Trading in old phone in Tokyo? Any local place to get most out of my old phone?

I have a pixel 7 (Japan version sim free) and looking to upgrade to pixel 10 releasing on 20th of next month.
Apparently, google will only give me 12k JPY and merkari is also not good.
Do you guys know any shop etc in tokyo that can give me best value for my phone.? I haven't been to Janpara and that "けっこう安い" shop in years but i doubt that will help much.