BiitfuuMen's Muslim Prayer Hat Cap Goat Genuine Sheep Leather Black Kufi Muslim Kufi Takke Peci Kofia Hat(56)

Size dimensions need to be in inches AND cm. I purchased a size 7 and it was too small (returned). When I went to view larger sizes the prices jumped from £6.04 (size 7) to £12.08 (7 1/8) to £12.20 (size 7 1/4) AND £22.70 (size 7 3/8). This is BIZARRE!!! Why is size 6 7/8 £9.64? Again, the pricing is very BIZARRE!!