T3i and 18-55 kit lens is fine. Something like the Photoflex First Studio 2-light kit ($250 from B&H, constant lighting). Manfrotto 190XB with 496 ballhead (B&H kit, $186).
+1 Tripod and lighting is far more important than lenses in product photography imo. This will be a good starter kit, and you can expand your arsenal as you reach the limitations of your gears, or when you just want new gears .
Canon 5D Mk II, 550D/T2i, 50mm f/1.4 USM, 100mm f/2.8 L USM, 17-40mm f/4 L USM, 24-105mm f/4 L USM, 70-200mm f/4 L IS USM, 320EX speedlite