Broncolor impact series

I've been looking to liquidate on eof my bodies. I've been offered the following:

broncolor impact s4 ,s40,s80, units with a lot of extras like reflector , soft box(2), soft broncolor case(sturdy).

I've looked online and found nothing except bulbs for this older? series. Anyone have an idea what these are equivalent too or what their value truly is?

IA photographer I work for uses Broncolor Impact 41 and 21 (IIRC); they are simple monolights, settings for full, 1/2 and (the 41) 1/4 power.
Decent, but nothing special.
They use a different bayonet (smaller) then regular Pulso heads, and smaller modeling light and flash tubes.
I dislie the way they attach to a light stand (they screw on).

Three heads will fit into a 'suitcase' which is 'luggable' (I would hesitate calling it portable )

Here's a set on ebay.