It's almost like people are trying to make a living..
I agree the £100 is steep, but you're not just paying for the material imo, countless hours go into finding the right supplier, getting the right designs and picking the best materials, and at the end of the day you're also paying for your after sales care should you need it, alot of the time you simply don't get that buying from India.
And you have to factor in economies of scale, these indian brands would be making thousands upon thousands of the same product as opposed the hundreds or less being manufactured for small brands.