Not as cheap as last year but still a good deal nevertheless. I've never used it before (stocked up on Autoglym from the Amazon UK deal a while back) but apparently is not too bad in a snow lance which you can pick up for cheap off aliexpress. If you haven't switched to snow foaming your car do it, you will have no regrets.
Product Description from SCA:
Chemtech CT18 Superwash is made for the driver who wants to wash their ride once, and wash it properly. This super concentrated pH neutral cleaning gel is made for jobs of all sizes from scooters and motorcycles all the way up to the biggest truck cleaner, with a biodegradable formula that is friendly to the planet but tough on grime.
Capable of breaking down caked on mud, dirt and mess encountered when driving through regional areas, this Chemtech truck wash detergent is suitable for spray, foam and handwashing applications to suit whatever facilities you have available. Safe to use on any surface, you can rest assured that whatever the scenario, Chemtech CT18 Superwash will have it shining like new in no time at all.