I have an entrance-way outdoor light that needs to be ceiling mounted.
There are no good fixtures available with a photocell and I don't want a
motion detector. The Heath/Zenith SL-4300 is apparently settable for
photocell only (no motion) but the unit gets poor reviews and I'd need
four dimmable candelabra bulbs adding another $28 or so to the cost.

I put up a plain porcelain socket, and stuck in a Philips dusk to dawn
CFL bulb
http://www.homedepot.com/p/Philips-60W-Equivalent-Soft-White-Spiral-Dusk-Till-Dawn-CFL-Light-Bulb-E-405852/100671110.
It works, but I'd really prefer an LED version such as the ones at
http://www.alibaba.com/showroom/led-dusk-to-dawn-sensor-light-bulbs.html.
But I can't find these in any store or at any online seller.

The vertical clearance is such that one of those photocell adapters adds
too much drop; the photocell needs to be built into the bulb like the
Philips CFL bulb.

Has anyone seen an LED version of something like the Philips dusk to
dawn bulb for sale?