B&Q kitchen discount

I don't often do kitchens but have been asked to fit one for my other halfs mum.

I've totted up the price as per the Tradepoint kitchens catalogue, it's come to about £5k all in, so not that much better than retail price.

Given that every kitchen retailer always has a sale on, anyone know how much discount I can expect on that £5k?

Also going to be looking at Wickes (which seem to offer 50% off for 11 months of the year) and Wren...

Anyone got any tips? Cheers chaps!