Anyone know a retailer who sells used lights on the lower end (Lowells, specifically,) individually or by the kit?

B&H Photo (www.bhphoto.com) might have some for sale.

I know a pawn shop in town that has my old Lowell kit. Other than that... Ebay.

I think used lighting equipment is like buried pirate treasure. Sure it's out there, but you'll never find it! :D
I spent a while looking locally for used lighting gear and found basicaly, zip, zero, nada. Ebay is probably the only place to find a good selection of equipment, and due to demand, most of it goes at a high price.