I am not someone who is interested in window curtains. Occasionally I do browse at curtains when I happened to see a shop selling curtains in Johor Bahru. I think the reason why you can see more designs and fabrics of curtains in Johor Bahru, is that the shops over there are much bigger than in Singapore. Rental of shops in Johor Bahru is definitely cheaper than in Singapore. So a bigger retail floor space means that you can maximize the display of all your products.
Many of these window curtain shops will display the selling prices on the products itself. This is what I liked. I don't see the need of a sales staff following me around the shop just to quote the prices of curtains or any other products. In the photos which I took, there are so many designs of curtains to choose. So now I know why people buy curtains from Johor Bahru.