Amazon has the best deal on the Wiss W7BWN Offset/Bent Pattern Snip at $31.75 w/ SS shipping.
The W7BWN Offset/Bent Pattern Snip is a non-compound leverage snip, like a pair of scissors. The handles are bent up at an angle to clear the surface of the sheet metal. They are rated as being able to cut up to 18 ga. low carbon steel. I find that often snips like this give a better quality cut than the compound types, although they are more tiring in heavier gauges.