[ARQ]

There a few good middlemen you can use, rider proxy, yokatta Japan, okinawa (toku taku toys). Those ones you can message for quotes on items. Okinawa also has a webstore (toku taku toy's) that you can order from.

Cs toys also have a really straight forward system for premium preorders as well.

Just a warning, all of these require you pay up front. It's not like amiami preorders as it's all made to order Bandai needs the cash

Edit: I don't know from Japan so can't help ya with them.