Thanks for the tip bro! I never knew the ring flashes were so cheap (made in China anyways.) Always thought they are way more expensive than a normal flash unit since the last I was in a camera store their cheapest one was like 400€ and the macro slider heads for tripod didn't sell for any less than 100€+ too. Might want to buy that aperture ring too.. a bit pain in the ass to lock it manually before reversing.
I'm certain I won't get "professional" results but it lets me gain some experience at a much lower entry cost so I gave it a go. Best of luck!!!