I really like SSS products and even the prices are very nominal. I however had really bad experiences with SSS when it comes COD. When you order a product on COD they will either wont send the product or take forever to deliver.
I have been ordering from SSS mostly pre-paid but I have alsa ordered on COD thrice, out of which 2 products never came even after sending 100s of reminders and when I had given up on my third product after around 1.5 months, they delivered.
The problem is that there collection and range is so good that I get attracted towards this website.
However my recommendation is you should only order on by making payment in advance else they might not seems you the product.