https://music.stackexchange.com/help/on-topic states that the following is off-topic:
- shopping help — including product or music search, or buying/selling advice or recommendations
I don't think this is particularly clear, because there are plenty of perfectly on-topic questions that someone could ask here that could help them with shopping, buying, or selling, and could even include general recommendations on what to look for in an instrument or piece of equipment.
Might it be significantly clearer if we were to say that the following were off-topic? (Edited with suggestions from Dom)
- asking for recommendations for specific products, advice on where they can be purchased, or product valuations
The first phrase there matches the current wording of the relevant close reason.
Update Jan 2019 - I want to tell the new user who posted Is MPS-850 a good module just for triggering VSTs? that questions looking for recommendations for specific equipment are off-topic. But there's still the same problem - our on-topic page doesn't state this in so many words, so it's rather hard to say so in a straightforward way.