I used UPakWeShip, shipping 28 boxes for $1,300, warehouse-to-door. We took my boxes to a local vanline in Austin told to us by UPak, they palleted it all up, even starting while we there watching, it would have been driven to Houston, and from there it was sent by ocean freight -- this was back on July 18th, and I've been told it docked in London just a few days ago. I am now awaiting port processing and eventually delivery from the UK company handling this end.
Of course, I haven't had delivery yet but so far everything has appeared to go very smoothly with this company, knock on wood.