Our price £144.99 inc VAT
You need 8 of them, I think. So - £1160.
I got the link from our Member Discounts - GWIZ batteries
forum page, although the link there didn't quite work, so I had to hunt around the store website a bit to find the T125. There are details on that forum page on how to get a 10% discount and free shipping. Details supplied by Tim Nicklin.
Other battery suppliers are available, including http://www.powercell.co.uk/products/6v_ ... blocs.aspx
who are also mentioned on that forum page. Again, their website as linked is uninspiring. Maybe they are too busy selling batteries.