Meant to add that the £149 price is a subjective thing. If you can afford it and intend to make regular use of them then it is a good investment. The converse is obviously true as well.
I walk my dogs twice a day and take some earbuds with me to listen to music and podcasts so I can justify to myself the cost of purchasing them. I also use them regularly on conference calls for work. They are very easy and convenient to wear as well and don't fall out easily although I have switched to memory foam tips to improve the fit.