Quality tools are one thing I don't mind spending on but the Kreg's Jr seemed a bit pricey for a plastic block just to drill holes. However, I'd been putting off a project on the 'honey do' list so I picked up the Kregs Jr from Amazon as mentioned by jwystup above. Have to say it works great.
The project involved making a rectangular frame from 1x4 cedar with a mesh panel for a rabbit hutch door. Cedar is prone to splitting so, after drilling all of the holes with the jig, I dry-fit each joint and pushed screws through to mark their position on the piece they would screw in to. After that I pulled everything apart and held the Kreg Jr, as a visual guide only, against the piece to be screwed in to and drilled pilot holes. (Hope that makes sense.) Anyway, everything went together fine, no splitting.
As far as special screws....they remind me of the ones used for assembling kitchen cabinets. Perhaps they can be purchased at a cabinet place? I just used 1 1/4" deck screws.
Thanks to BBV and all for bringing up this device!