A lot of money for such a simple flash (compared to rummage box prices...)
Anyway, that is a small one indeed, and I got in my collection, but there even is smaller and half stop more powerful one.
A very compact and quite modern tiny flash is the Metz 34 CS-2 digital.
A autoexposure flash with GN 28m, 3 (!) auto-apertures plus manual. Hot foot (needs to be isolated) and sync connector for tiny audio-plug. Swivelable wide-angle (24mm) diffusor (or tele fresnel lens (85mm)).
61 mm x 111 mm x 35 mm
Disadvantage: takes CR-2 batteries