I visited my local branch again to see if they had followed suit on component drawer units, unfortunately not. Still priced £35 - £75, depending on what's inside. I noticed one draw labelled "gold plated fuse" - it wants to be for that money.
I would like a drawer unit as a souvenir of my (mostly fruitless) trips to Maplin, but I won't pay more than it costs to get a new one from Screwfix.