I've bought 3 pairs of Sennheiser headphones (201s,203s & 419s) from them on Amazon.
I'm very happy with all of them, they look & sound new.
They even required "burn in" time for better sound.
I recommend them.
And, ye, they & Dakmart do appear to be the same company.
I think they are a good company to deal with.. I bought a HD558 from them.. USPS shows delivered by mistake but I didn't get it.. so I filed a claim with Amazon, the same day I got a call from them and they were going to send me another one the next day after they verified some information.
Luckily I got the headphone the next day, it looks like new and I was very impressed with their customer service and offer to ship me a replacement.. I think this company is legit just based on how they treated me on this incident..
I just ordered from them and now filing a complaint with A-Z guarantee with amazon. ordered "phone with EXTRA handset". received the phone but not the extra handset. contacted them, they replied 'comes with one handset only'. didn't respond to 2nd request for clarification...never again.
I emailed them at one time to ask about their return policy. What I got in return was a condescending response basically questioning why I would ever feel the need to return something that I'd purchased from them if I were "honest". I took my business elsewhere.