I believe the Enzys are recommended by Freddd, along with Country Life.
According to my recent calculations (iHerb prices):
Enzys (1mg tabs): 30 for $6.27 = 21 cents p mg
Country Life (5mg tabs): 60 for $15.36 = 5 cents p mg
So Country Life is quarter the price.
The only downside with CL for me is that it dissolves real fast, so I'm not sure I'm getting optimal penetration. On the other hand I don't have any mB12 deficiency symptoms, so maybe it's okay.