I ordered an AT440MLa cartridge from 2juki a few months ago, so I'll be happy to share my experience:
Shipping speed: Phenomenal
Shipping method: Upon order confirmation, I received an email from the seller, saying they had shipped the package labeled as "gift" to avoid import taxes. I was not happy to hear that, based on comments I read in forums saying that the recipient of falsely labeled commercial goods can be held liable for customs/tax fraud. In the end it worked out fine.
The cartridge arrived in good packaging, and in what appeared to be a genuine box. I did notice the cantilever was slanted outward ever so slightly. No biggie, just noticed it. As this was my first cartridge purchase, I can't speak to whether this reflects normal range of product variability, or whether 2juky sells factory seconds (?) I guess for someone who is very picky, they might keep in mind that exchanges could be a bit more tricky due to the international transactions.
So far, the cartridge has performed fine.