Well I did visit the shop which thinks kits are better than AG and they did have an Electrim boiler in, which had obviously been in stock for a long time. It was £60 cheapest I have found it elsewhere was about £80 but because it had a coffee splash on the side I asked him to give me his best price, after all I was going to have to wipe it with a damp cloth!
£50 brand new
Its only a 25L boiler so I'll have to do Maxi BIAB but looking at all the options it seemed to be the best without going down the DIY route.
At least one of the UK members here use the same kit and are able to get a full 23L brew out of it.