Is this accurate?

This is my highest shipping fee so far. Sent in plenty of shipments before, usually 3-4 boxes like this and has never been this high.

Where is it transported from?

The freight is affected by many factors: whether the delivery address is remote, the material of the product, the shipping date, etc. We have recently entered the end of the year, so freight rates will increase. This is normal. You can ask your freight forwarder to give you a reasonable explanation

Shipping rates went up since the beginning of the New Year. This could be the reason.