Beauty is in the eye of the beholder. Yes? That said, you'll encounter different physical types, skin colors, what they'll do in bed and what not. Some stunningly handsome men. I live in the USA and travel to Rio. I find the quality and performance of my experiences have far exceed the cost of a session. The equivalent of US$30 > 60 for what's received in return, is, IMO, an extraordinary value. I'll suggest traveling to Rio from the USA (my situation) solely for sex at one of the Sauna's with garotos isn't a good value. Having some other touristic interests round out the visit, for sure. Then again, value is in the eye of the payer.
Suggestion: take the time to read through the many trip reports here, testimonials from those of us who've made multiple visits to Rio, and Brazil more broadly.