2. You don’t need to buy.
You’re interested, intrigued, looking to buy, but not in a hurry. Browsing, but serious about it. Sadly, dating and negotiating have things in common. Desperation isn't a good look and will keep prices high.
3. If the posting doesn’t have all the details you’re looking for, send a friendly email.
Being polite is important. If the seller has an incomplete, unhelpful listing, it narrows people down. Less interest means better prices. Sending an email costs you nothing and opens a channel which fosters trust. The seller has invested in you if they’re responding.