It's unclear from your post exactly how you're going to use these brackets but here's a link to Lee Valley Hardware. They have a two similar units.

Here is a link that might be useful: Lee Valley

thanks willtv ... to try to answer your question, I'm planning to use these brackets to support a couple of small decorative shelves (maybe 11" deep and 24" long) in the kitchen. They won't be carrying a whole lot of weight. What I like about the Sugatsune bracket is that there's no diagonal support, giving a cleaner look that I like. The Lee Valley Hardware ones sure are (much!) more reasonably priced, but they have a diagonal support that I don't want. Somehow, though, I can't find anything similar to the Sugatsune at any price, much less at the more budget-y kind of price that I'm hoping for.

mc510, I suspected by the looks of the bracket you want that you're trying to eliminate the diagonal. I conducted a quick Google search and the only things I found were from manufacturers, primarily from China, who have a 5,000 piece minimum.
My guess is that exceeds your need.

What about one of these from Federal Brace?

OR:

The first one is the Forma Steel and the second is the Streamline. From my understanding of the pricing, they run between $30 - $40 each if you order 3 or more.

Ah, good find remodelfla; I never came across Federal Brace in all of my googling. It's a bit hard to tell from the pictures, but unfortunately I think that these have a bit more industrial/commercial-kitchen style than appropriate for my kitchen. (FWIW, the kitchen has white painted shaker cabinets and Amerock "Highland Ridge" pulls and round knobs.)

Here is a link that might be useful: Amerock

Not exactly what you were looking for, but I've used the EKBY BJARNUM shelf brackets from ikea in my office. The deepest you can get is 11" I think. The shelf slips into the bracket. You can use any type of 11" shelf you choose. They're only $15 per pair.

Here is a link that might be useful: ikea EKBY BJARNUM shelf brackets

I'm searching old threads........someone posted a while back about one that was able to be grooved into the wallboard and then tiled over. Sound familiar anyone?

I remember a thread about shelf where the hardware was recessed into the drywall, but I don't remember the tiled over part. I think the thread was something about...does a shelf like this exist anywhere. Or something like that. Someone was looking for shelving where there wasn't any mounting hardware exposed.

jenhp, i know i said that the shelves wouldn't have much weight on them, but i think i'd be concerned that those ikea brackets couldn't carry enough weight (what with that very short mounting surface on the wall). how do you have them mounted in your office (through sheetrock, into stud?), and how solid do they seem?

We used self tapping drywall molly bolts/anchors into the drywall. Works great! Very solid. You can get mollies rated for 30 or 50 lbs. I use them all around the house and have never had a problem yet. I certainly wouldn't trust it to just a screw into drywall. If I were lucky enough to have a stud where I wanted a shelf, I'd use a long screw into a stud. But since that is rare, it's mollies most of the time.

I get ones like this in the link at Home Depot.

Here is a link that might be useful: Self drilling drywall anchor

You can get the bracket your looking for at the link at bottom, likely elsewhere on the net.
Hafele has some hardware that can be completely hidden in the wall for shelves- a bit tricky to engineer the shelve and install
Showplace has "floating" shelves that install with no visible brackets but are a minimum of 2 1/4" thick. I have them in our office display and have used them in kitchens. Not to bad to install.

Here is a link that might be useful: Sugastsune bracket