Don't do it!
The best way to get Snap On in the UK is through a dealer. Ratchets like that one linked were probably on special for 59.99+VAT. That's how tools like that end up on eBay. So you are basically paying retail and not getting the warranty.
I suspect few people on GJ actually have access to a Snap On rep and/or know what sort of deals there are to be had and what pros really pay. Buy One Get One deals are just about weekly. Normal specials are 20-40% off.
And I would not choose that particular ratchet as my first good ratchet. The Dual 80 technology really shines on long ratchets. I would recommend the FLL80, or FLFH80. If I could have only one Snap On ratchet it would be the SHLF80A Mr. Big. Its great to have a ratchet as strong as a breaker bar that long (25") with a fine toothed ratchet mechanism. These are not cheap in the UK, but I'm sure you can find a deal if you are patient. Remember that the guts and the handles are replaceable. So something looking old and worn out will put off many bidders.