Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
The Raspberry Pi model A was the $25 computer and model B is the $35 computer, however, there's a little surprise waiting for the unsuspecting, wide-eyed DIYer; It costs a lot more than $25 or $35. In fact, it costs between four and ten times that much, depending on what you have to buy to make it work. As Robert Heinlein said, and David Chernicoff confirmed, there ain't no such thing as a free lunch or a $35 computer. I've been around long enough to know better on both but I still sprung almost $150 for a Raspberry Pi and peripherals.
When I first heard of the Raspberry Pi, I was excited because I thought it was more of a computer and less of a gadget thingy than the Arduino. And it is. But it's only a motherboard, not a computer.
Now, I guess it's time to split hairs here.