Valery, what do you mean by "low-down," a low price?

Don't hold your breath waiting for the answer...

I guess he means "the low-down" - "The true facts or relevant information about something", "all the important information" - https://en.oxforddictionaries.com/definition/low-down , https://www.collinsdictionary.com/dictionary/english/low-down
(I just googled; it's the first time I hear this)

God, that’s THE lowdown, and it’s colloquial, it’s basically gossip in most cases.

So when you say "abstract," is this an assignment in college or something?

No, what I mean is that all scientific papers come with abstracts (short summaries). This is exactly what выжимка means in this context. The only question is how short.

https://en.wikipedia.org/wiki/Abstract_(summary)

Oh OK, yeah, I’m not well-versed in this area.