I was given 20 sheets of electoral propaganda correx last week measuring 48" by 32".
I can make a single 6 frame nuc from a sheet or 4 lids.
The cost of each is about 3 metres of gaffer tape/duck tape to hold the thing together which is about 28p and two rectangles of 25mm polystyrene which go inside the end bits the frames rest on, probably about 20p worth of polystyrene or you could fish it from a skip if so inclined.
The polystyrene is optional but I like to push the boat out with regard to extra insulation and quality build!
So I throw down the gauntlet to you Scots to come up with a cheaper nuc.
I have one I made 3 years ago which is still going strong.
I have a template for the body and another for the lid and can assemble a complete box in about 30 minutes.
The tools needed are a stanley knife or box cutter knife, a tape measure, a biro, a pizza cutter for creasing the correx to make the folds and a piece of timber with a straight edge for folding the correx against.
correx-nuc..jpg
This is a prototype from a couple of years back. The current model is more stylish.