Heck, are you saying that the whole kit and kaboodle you bought was just $79, or only the light bar was that price?? Darn good value if you got the lot for just $79.
A couple of months ago, I got one of those Aldi kits with four LED lights (50cms each light) and all the connections/wiring, for $56 off the clearance table. Was less than half the original price of $129. I see these same sort of kits in other camping catalogues at prices up around $149 or slightly higher, so I figured I got a pretty good bargain. Haven't actually used it yet, but I've seen other vans in parks with this type of set-up under the roll-out awning, and they seem to give off pretty good light. I guess the downside to having these "extras" is that it's just one more thing to pack up when it's time to hit the road.