Mi. Com website is very easy to buy any xiomi smart phone online. I also used this website for buying mi 5a.
This website has very nice service , you can easily return your product if product is defective but it is very rare case in which product is defective.
They deliver your product in the time that have been given by them. You can return your smartphone at the time of taking it from them also.
You can pay using debit card, credit card as well as cash on delivery as you choice.
Hence if you have to buy mi product then you must buy from mi. Com.
Thank you!