There are several online dealers who are legit. Are there no dealers in your location with their shops? If not then suggest to contact Mr Anil (HifiMart @HiFiVision) who can suggest and even offer good deals where possible.
Experience varies with AVShack. I'm one of those who had extremely poor experience. Having interacted with the owner Pratham Arora, I have no qualms to call him a fraud.
For me peace of mind is hifimart.com. Anil is honest and sincere. Pick up a phone and talk to him for best deals.
Also avstore.in and theaudio.co are good options.
Vplak is non-legit. Revolver Club at your own risk.
Hifi Mart should be your first priority.
And I did have a good experience in dealing with The Home Cinema while buying my XTZ 12.17 sub. Mr. Rajesh had helped me a lot.