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Well from my P.O.V., here are my two cents worth.
Not knowing what kind of macro you are looking for. I have only just started in macro fascination and this is the path I have taken.
I first got a Ricoh 1:1 Macro Focusing 2x Teleconverter to which I first attached a 50mm F mount and other lenses. Then I got a reversing ring and also a coupling ring to play around with. And later also converted a 3X teleconverter to make an extension tube. I've just been playing with different combinations at the moment.
Here's a link to how to manage the TC conversion if you are interested:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/57964-pictures...rt-tc-ext.html
My point in all this is that these few additions (separately or however) are a great intro to Macro and they are not necessarily costly. The problem is in focusing because the d.o.f. is slim. But it's great fun. It's interesting what one learns in the process. Good luck.