The cost is almost the same for the worsted weight Berroco Peruvia(.043 cents per yd. in 174 yd. hanks) and Malabrigo (.048 cents per yd in 215 yd. hanks).
Now I have two choices for yummy merino. When I want a more solid treatment, I'll go with Berroco Peruvia, when nothing but MMMM will do, then Malabrigo.