Well, that's a standard kitchen.Laminated worktop I see why you are in that bracket now.
Like I said 10k-20k is the price for a half decent kitchen you intend on keeping.
As said, if your idea of standard is iranian marble worktop on a continuous 4 metre run, then of course you can spend even £50k on a kitchen.
Solid hardwood 22mm cabinets, Swarovski encrusted lights, electric integrated larder pulley, gold plated taps, hand crafted tiles, lots to play with...
I bet some sheikh spent even £100k on a "standard" kitchen.
However, by "standard" I mean what a working class family would be able to afford.
I don't know any working class family able to afford £20/30/50k on a kitchen.