But imo price is not the most important aspect of quality software. The important thing is cost - and that doesnt just mean monetary.
(to take the sex analogy; a one night stand might be free and great fun, but it could come back and bite you 9 months later just because you forgot an important consideration in the first place)
I find this quote confusing. I can accept that gratis sex is better than paid-for sex, but then it's a pretty banal analogy to make -- in simplistic terms, anything is 'better' if you can get it without paying for it, software or otherwise.
On the other hand, if it's trying to make a case for libre software, then it's must be talking about libre sex. And I'm really not clear on what that entails.