well, you can get a very similar effect in PS by using radial blur.
copy the item you want to remain focused to a new layer, then go to the background layer and give a radial blur. On the new layer with the focused item erase any remaining background. It's not exactly the same, but it's a lot cheaper, and I think it would be close. I've used that effect on some of my event photos.
I can also get a pretty similar effect by using my 70-300mm lens - zoomed out to 300mm and use a wide fstop like f4.5. About the only thing that will be focused is the main item I'm focused on, though you can't get as close as 1", which I think you can with lens babies.
Might be able to get it to work with a macro ring though, and they are a lot cheaper than a true macro lens.
Just thought of something else...I've done a couple of convergence photos, but they are very hit and miss. Two ways to do that - I usually set the timer and use a tripod and a longer shutter time - focus on the object, hit the shutter and when it goes off twist the lens - not so fast that you are done before the shutter closes and not so slow that you aren't done by the time it closes. Alternatively, you can do the same thing but twist the camera instead (can't use a tripod for that). It's actually a very old technique but you don't see much of it anymore. Probably worked better with film, for all I know.
I've done this for a couple of images but had to take a lot of shots to get the result I was looking for. One of them was a christmas image that SS accepted, much to my surprise.
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