For anyone who might not have wished to fork out £29.99 for one a month ago:
Now down to £4.99 - ('six for the price of one') - in Maplin's Clearout:
https://www.maplin.co.uk/p/haynes-bu...calendar-a10yh
118 items in the toys & kits section of the sale.
Lots of other things that might be of interest - crystal radio kits, Velleman kits etc, though nothing takes my fancy.