Features
You can find a list of features straight from the website here: http://www.deckkeyboards.com/techspecs.php

For ease, I am going to address many of these points:

1. Lighting: I showed the comparison of the Saitek Eclipse 2 and the Deck. Keep in mind that I have always said that the Eclipse series has some bright backlighting with very well-designed character lighting. Now that I have met Deck, I would have to say that the bar has been raised substantially. Where the Eclipse illuminates a plastic frame that lights the keys and the surrounding desk, the Deck is illuminated by an LED placed directly underneath each character. This brings out a superior brightness the likes of which I have never seen.
2. The LEDs: “Deck™s lights are rated at 200,000 hours of life. That's pushing 22 years if the Deck™ is never turned off. It has seven different intensity levels and full brightness is tweaked to 5.25 milliamps.” So not only can you guarantee that your LEDs will last 22 years, but they are the brightest available on the market. I wanted a bit more information so I posed the question to Deck. I was asked not to quote him as he is not in the purchasing department, but know that for the average John Doe at Radio Shack, a single blue LED of the brightness and quality they use would cost about $1.50 USD. They buy them in the thousands; he said that even at this quantity that the LEDs still cost them about $0.90 each. On an 82-key keyboard like the one I have received there are 84 LEDs sent (one under each key, one under the caps lock indicator, and one in the end of the USB cable) and this equates to roughly $75.60 for those of you a little weak in the number crunching. So almost $76 of their $120 price point is spent on using the best LEDs money can buy.
3. Bottom Pan: Industrial diamond plated metal. Not much more can be said other than the obvious things this provides: a nice sturdy, heavy base and yet another demonstration that corners are not cut in the construction of these babies.
4. Connection: USB 1.1. I was going to jump all over this, but then I had to take into account that this keyboard is not a hub, or providing any high-bandwidth features, and thus USB 2.0 is not necessary while USB 1.1 is more than adequate to transmit thousands of keystrokes across.
5. MTBF (Mean time before failure): 86,000 hours equals almost 10 years. My question is, if the keyboard will only last on average about 10 years, then why not save some money and go with 15 year LEDs or something with the same brightness and less life? This would potentially allow them to lower the price point and make this keyboard more attainable. Still a heck of a long time for a keyboard to last.
6. Switches: “Will absorb near 20 years of heavy use. Deck™ is constructed with 50-million cycle switches and gold cross point key switches. Putting it into perspective, the keyboard you are using right now is most likely using 1 million cycles and no gold.” (From Deck’s Website) What they are talking about is the world’s most well known and well constructed keyboard switches manufactured by Cherry and titled the MX. More information can be found at their website . With their internal use of gold and their build quality rivaled by none, Cherry is well known and well sought after in today’s keyboards for not only their long lasting life, but their consistent pressure and tactile feedback during use.
7. Board: “The FR4 (fiberglass printed circuit board material) is built for strength, reparability and straightness. We reinforced the double-sided plate through holes with a black solder mask.”
8. Operating Temperature: “Deck™s operate smoothly from minus 40°C to plus 70°C. So you're safe in both Antarctica and Death Valley. You never know, you know?”
9. Key Caps: “Characters can't chip off the key caps or wear down to oblivion. Period. Deck™ uses a sublimated negative printing process which drives the ink into the plastic keycaps at 525°f. This means permanent printing from the inside out, not on.”
10. Add Ons: “Deck™s ship with an extra skull & crossbones key cap, setting the stage for your mod.”
11. Typing Rate: “Type up to 240 characters per second! Go that fast and still get the codes out in the right sequence. You cannot type this fast. Ever.” They aren’t lying. Even if you could type as fast as World record holder Barbara Blackburn, the fastest you could type would be 212 Words Per Minute. This is super fast, but it still only breaks down to about 3.53 words per second, which, if every word is 10 characters long (most are much less), is still only 35.3 characters per second. You would have to type at least 7x faster than the world record holder to actually be TOO fast for this keyboard. Good luck.

What does this mean for you? This means that more than any other keyboard this one can provide you with an unquestioned level of response and accuracy for the entire length of the keyboard’s life.

Wrap this all together with a warranty that even covers non-damaging modifications, and I would have to say that price is more than warranted. Like I mentioned earlier, the LEDs alone total to around $76 and if you add that to the top of the line Cherry MX switches that they use, it really makes you wonder why the SteelSeries 6G cost so much damn money. I mean after 82 Cherry switches, the LEDs, the PCB, steel plate, the housing, and the manufacturing costs, how much money is there actually to be made even at a large scale? According to our contact at Deck, there is actually very little profit involved. These keyboards are a part of their product line simply because they can be, and if people would like to invest in having the best of the best, they make it. If not, then go with something else. Their theory is that they aren’t around to make a killing in gaming, but they can make the best damn keyboard available to gamers.

Is it worth the money? It would seem almost every damn dollar goes towards manufacturing this baby, so yes.