OUCH !!!!!!!!! You can get high quality Bosch Wipers from reliable eBay sellers for £11/12 a pair, delivered.
Your point being? that post is 3 months old and looks like only the 20in size was on offer plus the TCB reserve & collect offer wasn't running then meaning you could get a £1 off.
Most cars use two different size wiper blades :thinking: MIne are 20inch and 22 inch If you go to a proper motor factors like Europarts (they are even online) you can get wipers from a couple of quid £2.01 Right hand side £2.43 Left hand side For cheap make And for Bosch its about £9 for the pair And guess what the bloke at Europarts will be able to advise you of the correct size for your car, i dont think they do that at Argos or Tesco LOL
I bought these months ago following an OP - just search wiper blades here and see it appear, but this post has the addition of 18" to the title and 18" is a significant material difference I suppose? I think mine are fine - just don't let 'em snap back when you've washed the screen 'cause they can separate at the end and then scratch a beautiful arc!