I haven't heard of 'Kerso' before, is it a shop in the UK, online, on Ebay?
I bought a Nikon D200 from DigitalRev on Ebay at Christmas, and had a mixed experience. They were the cheapest price, and promised to refund any import tax, should it be charged, as part of the sale.
Poor communication trying to sort out my preferred courier had me worried I would have to travel a fair distance should the courier be able to deliver to my door (I live behind security gates) :shake:. The tracking number given was in the wrong format, and after trying to work it out for a couple of days, while being unable to get in touch with DigitalRev, once I did, I found the camera 30 miles away in Manchester.
So, as I said, part of the sale was the understanding that any import duty would be refunded. About 3 weeks after delivery, I received a letter from the courier asking for the import duty. I copied the letter and emailed DigitalRev, and they refunded the money within a day or 2. Which I was very impressed with.
So a mixed experience. Cheapest price,
poor communication,
promptly refunded import duty.