Solid box i purchased last week on Solid4you.co.in . COD is not available but the process is much similar to COD
You have to make payment to PayuMoney(a third party) , the money will be with them till you release it after 7 days . If you have any issues or disputes after receiving the product you can raise a dispute or dont release payment
Currently the site is showing maintenance, check it later , but it is directly from company