According to Key Note's exclusive consumer survey, the proportion of glass-wearers willing to pay more for designer frames has increased from nearly 30% in 2013 to almost 40% in 2015.
Read MoreA Key Note market report finds that as sugar replaced saturated fat as the number one health focus, many consumers are cutting back on sugary biscuits and cakes, in an attempt to lead healthier lifestyles.
Read MoreKey Note's new market update reports that the overall Direct Marketing sector has grown by 6%, which they attribute to the growing use of mobile, social media and video advertising.
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