A55/57 - What are my beauty dish/ring flash options?

I'm wanting to determine what my most affordable options are for a beauty dish or rind flash for an A55/57.  This is for taking portrait/head shots and NOT macro shots.  I have the discontinued HVL-F36AM flash and I know I could get an adapter for it to attach to a dish, but I have yet to find an adapter, probably because that flash is no longer in production.

So what are some options/suggestions?  Ideally low cost options (not $400) Thanks

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