The Problem
Selling things on Facebook Marketplace is surprisingly labor-intensive. Writing a good listing requires thinking about keywords, pricing psychology, what to include vs. leave out, and how to answer the same 8 questions from 40 different strangers who message “is this still available?” and then ghost you.
The Workflow
Step 1 — Listing Creation
For any item I wanted to sell, I’d give Claude:
- A photo description or the item itself (category, brand, condition, what’s included)
- My rough sense of what I paid and how long ago
- Any relevant flaws
Claude would output:
- A recommended price range with reasoning (comps from recent Marketplace sales, depreciation estimate)
- A listing title optimized for search
- A full description — specific, honest, keyword-rich, appropriately brief
The motorcycle listing specifically required getting the tone right: enthusiastic enough to attract serious buyers, specific enough to filter out tire-kickers, honest about the mileage and why I was selling.
Step 2 — Response Management
A Chrome extension let me template and batch common responses without context-switching back to Marketplace constantly. Standard flows: “Yes, still available — when can you come see it?”, price negotiation counters, and the polite no to lowball offers.
Claude wrote all the templates. Including the one that gracefully declines someone who offers $500 on a $2,400 motorcycle without sounding dismissive.
The Motorcycle Sale
Listed a Honda at market-rate pricing with a Claude-written description. Sold in 4 days. Three serious inquiries, one test ride, one wire transfer. The listing included specific language about the service history and storage condition that attracted the right buyer — someone who’d done their research and wasn’t going to try to negotiate based on vibes.
The Broader Pattern
This has become a repeatable system. Moving? Claude writes the storage unit listing and the Craigslist posts. Selling gear? Claude recommends whether eBay or Marketplace is better for that specific item category, then writes the listing for both. The cognitive overhead of selling stuff used to make me procrastinate for months. Now it takes 20 minutes.