Least expensive solid stereo stand?

Get a cheap one here or Audio Advisor NOW!!!!!!

Have you looked at InterMetro shelving?
It's both very sturdy and relatively inexpensive:

4 Posts at $10/each
3 Shelves at $25/each
3 Shelf-Tops at $10/each
Done.

Thank you, I'll look into the Salamander

Great!  thank you Pokey 

I have a Salamander rack. I just put a Bamboo chopping block from IKEA on one of the MDF shelves. Then I raised up the component (CD player) with Maple blocks. I did some critical listening and found that this was a very good tweak and the cost of the chopping block was just $14.99+tax. I already had the blocks as they were scrap from a kitchen. The chopping block is not large enough to replace the shelf, but it didn't seem to matter at all. I suppose you could do this on any rack and save a bunch of money over buying a specialized audio rack. I could only imagine the 2 or 3" maple slabs mentioned above to be at least as good.

thanks!

Salamander can work well IF you put  2-4 " maple slabs on the MDF 
 but "harsh" sounding stock.
The beautifully finished 3 "  maple sold on here by Dawns Stands in
 Michigan@ 105$ shipped work a treat and look very elegant on black
 Salamander . I bought 3 from her and best money I ever spent for my system.

Two cement blocks and a piece of plywood is the lowest cost. 

If you want a bit of elegance, then you could look at Plateau racks. I used two of the larger TV stands on casters which I place end to end forming a wonderful, long rack across the front of the room. Perfect, well built, looks good and costs not too much. 

@tomcy6 , do you have any comments on salamander's Archtype HIFI-rack?
those are adjustable shelf being fixed by nuts & washer.
http://ecx.images-amazon.com/images/I/41NVKX7orsL._AC_UL320_SR222,320_.jpg