I have not found or heard of an alternative yet but at that price it would be good to have one! I paid the £25 each a couple of years ago and replaced mine when the centre bushes had disbonded. The replacements made little or no difference, so don't expect any remarkable improvements with new ones fitted. I know you are selling them Black Adder but if you find a good alternative to add to the list it would be appreciated, for us DIY'ers.