Personally, I am not interested in low end. But what would we call low end? Audiophile value is not found in low end, good stuff does cost.
Vintage can be interesting, though I would have nothing or next to nothing to contribute, except asking some questions perhaps.
In any case, I don't view Audiogon forum as a free consulting service, I see it as a place where audiophiles and those who might want to become audiophiles communicate more or less freely and discuss various relevant subjects from sometimes different angles.
"doors lead to other doors" . That's intriguing.