It be a bit of plastic to hold chain cleaning fluid and agitate said fluid on chain as it passes through - not sure precision engineering is really required and have used one of the cheap for over 5 years without any issues (more than likely out the back door from the same factory that is producing the parkers variant), similar results as others get that pay more that I have also seen and compared. Personally think as deleted stated this deal is overpriced and they have been a bit stingy on the fluid supplied - yet others are rating this hot - so horses for courses. Vileda on the other hand have their super mop starting at £250 - obviously this is a prime value and they the huge market they are aiming for there isn't in the slightest a little bit crazy. Me I'll keep my spending to where I see value - like the £3K coffee machine which messages me from time to time :)
Agreed, paid a similar amount as the deal for a Parks one (which the ebay chinese one looks to be a bad copy of) so I think this is a decent deal. The listing for that cheap knock off doesn't inspire much confidence: "Please allow 1-2 cm error due to manual measurements . Please kindly understand. Due to your different monitor setting and lighting , it may has some color difference from the real item . But we guarantee that the style is the same as the picture showing . Thanks and please kindly understand. " And better yet: "Turns on the top cover first, to enters the petrol" ???
It's usp is that you put the cleaning fluid in the top and this drips onto the chain and draws off on exit. Other than that is is a plastic holding with brushes with enough degreaser to do your chain twice. You will still have to wash afterwards exactly the same as you would with the Chinese made approach ( co incidentally that looks very similar to the highly rated park tools solution) - if they supplied a decent amount of degreaser with it then I might agree with you but 75ml - even merlin cycles offer a solution at 5.99 with both lube and degreaser.
To be fair Muc-off is the market leader and a great product. Comparing it to a cheap ebay chinese made substitute is not accurate or fair. Want a cheap and super effective degreaser? Use diesel better than the idiot consumer safe versions for sale that smell like fruit and safer on aluminum components. Heat
https://www.ebay.co.uk/itm/Cycling-Bike-Chain-Wheel-Wash-Cleaner-Bicycle-Tool-Cleaning-Brushes-Scrubber-UK/192515457544?hash=item2cd2d0c208:m:mGOB7af05PAEO3_jGgIx6FA £4 for a similar tool £5 for similar tool + Brush Can get a lot more than 75ml of degreaser for that price difference - infact could also buy some lube and still have some change,