I'd say that overall, Buyee is a good Japanese proxy service, but I believe that there are a lot of cons when it comes to using it. There have been odd instances where I was denied to bundle items through Mercari Japan because I wanted to save money on fees and shipping. That is another thing too, I'm not a fan of their fees because overall it'll add another 1,000 yen to your order in total, though it depends on which plan you pick. Also, their "consolidate package" and "protective packaging" options require around 1,000 each for some reason. Which feels way too pricey. I've worked with other proxy services and they never charge for those kinds of things, which really should be a given. Considering the fees you have to pay for each item you purchase. But by far, Buyee has a great customer service, which I can rely on most of the time. It'll be hard to say whether I'd use them again, but we'll see.