That seems to be the going price as I have been looking for a few weeks and the only other one I saw was an A4 one for around £29. A friend has an optical A4 and the way the buttons work doesnt feel as positive or nice as on mine,so I was put off by that fact more than the price.It was a bit of luck that I was asking another friend if he knew where I could get one and he had seen the leaflet the week before for Lidl saying that they were coming in on Thursday.
There seem to be a few cordless optical ones around but I have only seen 3 that are also rechargeable.The other was a Chic one which funnily enough looks identical to my Mk1 typhoon one even down to the RF Base/Recharger