With the price they were being sold at I'm very surprised this hasn't happened sooner, there were a few things I wanted but the price was outrageous and I was able to get something quite similar a lot cheaper. Though if it is making a loss then it is understandable, maybe try and focus on something that is actually going to appeal better to your target market.
I have two. I won one in a contest and the other I bought on sale with some of my own money and some points from donations, contest prizes, and commissions. First one has been discontinued for a long time so nobody would probably recognize it, the second is the fancy llama shirt.
I couldn't care less for the merch. I don't really care about owning merchandise of a website (I want movie and TV show merchandise, but that hardly exists) and the shirts weren't special enough for me to order them online (which I hate anyway).
However, I am a little afraid of a side-effect of this: No more designing contests. Which really were a great way to drive up your views/popularity. On the other hand, if that turns out to be true, I'd like to say this: Got what you wanted now, stupid people that always complained and complained how the contests weren't fair just because you weren't good enough to win, HUH? This what you wanted? Now nobody has anything!
Really? That's a shame. They gave out some pretty sweet swag in San Diego last year so I thought this was a positive sign. I have some pretty old 2007-ish devWear: A buddha tank top thing, one I can't really describe it was pretty abstract but looked pretty, a Fella plush, a lanyard, some buttons, stickers, an emoticon stress ball and a deviantART marker.
I never got any shirts, but I have two beanies that they used to sell with a brim on the front. One in white and one in black. My favorite winter-wear ever. I'm not surprised the shirts aren't taking off. It seems like they tried to become a clothing brand, and just kept pushing it. It was cool when dA (the art site) sold a cool t-shirt design here and there, but suddenly they're just selling a whole bunch of dA clothing and it just didn't seem as... uhhh..... speshul. I dunno, seems like they grew the line too fast, and it became unsustainable? MAN, I SHOULD RUN A BUSINESS>
I've gotta say... I own a lot of specialty-tees. Most of them are from the various comics I read.. I've got a few from some e-cards... Various video games I play, etc. But, I've never bought a dA shirt... or any of their merch, for that matter. Know why? I've never felt proud of or wanted to advertise the site. Take that as you will.