I bought 6 digital surveillance cameras and one NVR. After I put them into service, in less than a month the NVR and 2 cameras failled.
I sent these devices back to Chinavasion but they told they were no longer being manufactured and they couldn't repair them anymore because they didin't have spare parts. I tried to negotiate with Chinavasion, asking for my money back, but no way.
In summary, stay away form Chinavasion, do not ever of buying from them, theirs devices are not reliable and you cannot repair any device that may fail.
As for your money back? Ho ho ho ... forget it.
This is fairy tale for them

Items never received. No refund

Invoice number: 2871052

I ordered a phone and some other things. (160$) Products never arrived.

I opened a ticket and after months of back and forth. I was told there's nothing we can do.

here is one of the replies:
---------------------------
Dear Marc,

"Our local post office had finished the investigation and the resuld is delivered. However, if you have not got it, their suggestion is as below:

1. This is a kind of post service and they can't provice the delivery signature.
2. Use this one 61299991206455380299 to contact FedEx to see which post office they delivered to?
3. Use this one 9261299991206455380299 to your local nearest USPS to see where they delivered the parce.

Thank you for your assistance."
----------------------------------
Fedex shows delivered to post office... Post office shows waiting for package.

So I lost 160usd.

Never buy from them!

chinavasion has put apost in a forum to convince people how legit company they are here is my reply to them

you are talking about legit?? you??? may i remind you that i buy a phone from your site and after 7 months that his camera stop work is end it to you to fix it. You reply that is not fixable and you will refund me 30 eyros the prize was 58.71 and the phone was in warranty of 12 months and i told you eather refund me the full price to my chinavission account or replace it with a smae or a difrent one with same specs you reply you cannot do it becouse the refund will be 30 eyros couse i have use the phone for 7 months . is this legal? i dont know any low that it say that ,as far i know the low say if an item is not work and is not my responcibility you are obligated eather to replace it or refund it .
your site is totaly cheaters that follow his own rules and translate them as you like and you thing that becouse we are far from you we cannot do nothing trust me you are mistaken i will find the exact official agency in our country about this kind of matter and i will make complains there someone have to check you cheaters couse i see many people in other forums with the same complain about you . As far until know i have contact with many of them to take a certain action about your site and you . you cant cheat people by making your own rules