pergolide: compounded capsules or Prascend tablets?

My mini mare with Cushings and Insulin resistance is doing well on 1 mg / day of Prascend. However, the tablets are expensive, 60 for $114, vs, $48 for the same number of compounded capsules fro Thrivingpets.com. Has anyone used the capsules and this compounder? Any other recommendations? My vet is skeptical that the capsules will be as good as the tablets. It is odd that they come in .95 mg and 1.05 mg strengths, but not 1 mg.