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£130 in mark up to remove a feature and dip it in hydrophilic coating? amazon.co.uk/gp/product/B015P6UJ90/ref=s9_simh_gw_p200_d0_i2?pf_rd_m=A3P5ROKL5A1OLE&pf_rd_s=desktop-1&pf_rd_r=0WK2T5FARQWHND000YAN&pf_rd_t=36701&pf_rd_p=577048407&pf_rd_i=desktop vs amazon.co.uk/gp/product/B00S8FJYD8/ref=s9_simh_gw_p200_d0_i3?pf_rd_m=A3P5ROKL5A1OLE&pf_rd_s=desktop-1&pf_rd_r=0WK2T5FARQWHND000YAN&pf_rd_t=36701&pf_rd_p=577048407&pf_rd_i=desktop