I have very little extra money and as a result, have become something of a cheap mod connoisseur, as it were. Oh sure, I have a couple of fancy devices for TC, and I certainly have purchased a lot of stuff over the years when counting it all, but the vast majority of my devices cost less than $60. A BUNCH cost less than $45. My experience has taught me two, related, incredibly important things when purchasing and using cheap, Chinese devices:
1. Purchase from a place who you think or know has a better track record of honoring warranty, and then expect that the device will not last you a day beyond that period, especially if it's going to be your primary device. Anything extra is a bonus. And really, since most warranties are still 60-90 days (or should be), the per-week/day cost of a $55 device, even if it dies after 3 months, is not that severe.
2. If you want your device to last past the warranty period and you are able, get AT LEAST one more device to rotate. My cheap mods have almost all last me well over a year because I don't use any of them primarily. I switch around which inexpensive mods I'm using frequently, and it has worked out beautifully (knock on wood).
Sorry this happened to you and glad no one got hurt.