Linda,
I purchased the 'knock-off' throatless shear from Harbor Freight. It was $130 at the 25% off sale on
4 July 11. It, I believe is comparable to a Beverly B2. I am not an expert on shears but this one will easily cut whatever guage steel they make 55 gal. drums. I mounted a piece of angle iron on the base and clamp it in the vise for a stand.
They sell replacement blades as well.
For hobby blacksmith work, I cannot complain.