I recently plan to install double glaze window throughout the house (21 window plus 1 french door and two side doors).
I have contacted safestyle, crystal, anglin and everest and got four quotes range from £12,000 (vs £18,000), £9,700 (£15,000), 15,000 (vs £20,000),to £25,000 include VAT for same requirements: uPVC grade A double glaze with Georgian grid, internal beaded, with dummy, Fensa certificate.
All of them initially gave me a high quote at the beginning and then lower the price upon negotiation. You can tell the margin is so high if comparing their original quote. Really confused. Any thoughts?