If you have an EQ mount and would like an adapter for your SeeStar (50 or 30), reach out to me. I can 3D print you one for $10 and bring it to the next PAS meeting.
Its use almost eliminates stack failures and of course makes your photos nice & crisp without field rotation. The prices for a wedge have gotten outrageous and if you already have an EQ mount here's another use for it.