I always love a bargain. I would expect these speakers to be very good, but you would have to look at what else you can get for the money at the same price.
The only problem I have is that it seems you will buy them and let them sit in a closet or in the cupboard for nearly a year before using them. A significant chunk of the warranty will be gone before you even use them.
However, like I said, I love a bargain, and I suspect you could store them for a year, then use them for a year, and still get back pretty much what you paid for them.
But the final decision falls on you. Can you get a chance to hear them before you buy? Or perhaps you have already heard them.
In a recent audition, some one compared the Tannoy DC6T-SE which are also on deep discounts, to the Tannoy 6.4, and while the 6.4 were clearly better, the DC6T-SE were just too much of a bargain to pass up. At £2200/pair, one might question the speakers, but at £1300/pr, they become much more attractive.
Here are the Tannoy DC6T-SE (retail £999/pr) -
Tannoy Revolution DC6T SE Speakers (Pair) for £999.00 in Speakers at Audio Affair
Tannoy REVOLUTION DC6T SE Espresso | Speakers Per Pair | Richer Sounds
Superfi - Tannoy Revolution DC6TSE Floorstanding Speakers (Pair)
And here is the Tannoy 6.4 (£2199/pr) at its more common selling price -
Tannoy Precision 6.4 Speakers (Pair) for £2,199.00 in Speakers at Audio Affair
At £1399/pr, this is really a bargain, but again, the final decision falls on you.
Steve/bluewizard