Probably some M4x78.345 bolt needed to attach some stuff inside is on backorder and most likely not much can be done about it.
I totally agree with you. CK should raise the price to at least £1800.
After shipping and customs, I paid about 1800 for my Kemper. That said, I ordered from Thomann and within a few days, my order was shipped out. It then got lost somewhere in the mail and I was frantically searching for it. Luckily, it arrived.
Don't regret paying the price either, but I'm sure Mr Kemper's business model factors in both volumes as well as a good price tag. It's nice to have such a wonderful product that delivers the goods at a decent price point.