We fit Leicht Kitchens for a living, apparently Germanys no.1 Kitchen by volume…. They are much nicer than Howdens etc. and a lot more customisation available. The group 1 kitchens can be supplied at a lower cost usually than Howdens too according to the designers in the shop.
not a sales pitch, just maybe think outside the normal suppliers box a bit and you maybe surprised at what you can get for your cash.
I will say this however, good fitting can make a bad kitchen ok, bad fitting can ruin even the most expensive products.
Be as accurate as you can with your measuring and info, take notes of where the soil boxings, doorways, windows, gas/elect meters, existing supplies, stop cock and sockets are. this will make the designers job easier and your price more accurate.