MUM-of-four Jay Cook couldn’t believe her eyes when she spotted a designer Michael Kors bag reduced from £210 to just £17 in TK Maxx. Jay, 36, a stay-at-home mum, was shopping in Carmarthen, Wales, with son Alfie, nine, when she nabbed the unbelievable bargain. The money saver had been hunting for school trainers for her eldest son when she was drawn to a clearance sign while going up an escalator. It meant she saved an incredible 91 per cent on the designer item based on its original TK Maxx price tag. But some Michael Kors’ bags sold elsewhere can cost thousands of pounds. While we couldn’t find the exact bag being sold elsewhere online, similar version of the product were selling for between £141 and £167.Jay, who lives with partner Andrew Crowe, 37, a self-employed builder, and children Demi, 15, Joey, eight, and Willow, four, told The Sun: “I spotted loads of handbags and the first one in the front was a Michael Kors down to £17. “I’ve always wanted a Michael Kors bag but I couldn’t ever afford one.” Jay, who lives in the Welsh village of Betws Bledrws and plans on starting her own beauty business from home,…