Nice work. Way better then those cheep @$$ made in china crap I've seen in stores. (Sorry no offence to any one who lives in China)
And the cost is about the same (STOP SCREAMING AT YOUR MONITOR AND READ THIS DISCLAIMER!)
if you're looking to build something as basic as those cheap onesGo check out that forum he linked to for his project breakdown, and you'll find SCADS of links to other places where you can find plans and whatnot.
To answer someone's question, if you check out that forum, you'll see that having an upholsterer do the vinyl and felt work probably wasn't the route he took (I'm guessing, but still...) and it's easy enough for you to do if you follow any of the step-by-step directions on any decent project website.