I am updating this review, which was negative and one star, to 4 stars, because the issue has been resolved.
This was the fault of the shipper and not CariD, so I was wrong about them.
It freaked me out that CARiD couldn't track the delivery, as it said it was shipped but the shipper said it had not received the item. This made me want to cancel and get a refund, because the uncertainty made me uncomfortable, and when I was told by CARiD this couldn't be done immediately, this made me more uneasy.
In fact the item arrived, shipping box badly damaged, but the item was fine. I don't know if this was part of the issue, but the information CARiD gave me was correct and the shipper was incorrect.
So 4 stars, I'd say 5 but the inability to track a large and expensive item did cause me some stress, I hope they can fix that between them and the shipper.