# Check whether a secondhand deal is fair. From what similar items actually sold for A secondhand deal check tells you what an item is worth near you and what to inspect before paying. With Agentik, your AI reads available and sold Facebook Marketplace listings through ScrapeCreators, the new price on Google Shopping with DataForSEO, and common problems with Serper. - For: Anyone buying or selling used items - Providers: 3 (ScrapeCreators, DataForSEO and Serper), 5 tools - Example (One item near one city, available and sold listings, 5 listings read, one new-price search, 2 Google searches): at most $0.04, computed from the live catalog - Updated: 2026-10-10 ## Each provider does one part No single provider covers this job. Through Agentik your AI calls each one for its part, from one connection and one prepaid balance. - **ScrapeCreators** (3 tools, at most $0.02): Facebook Marketplace listings near you, available and sold, with their details. - **DataForSEO** (1 tool, at most $0.003): The new price on Google Shopping. - **Serper** (1 tool, at most $0.02): Google results on common problems and what to check on the model. ## Give this to your agent ```text Use my connected Agentik MCP server for this job: secondhand deal check. Check whether a secondhand deal is good. First ask me for the item, my city and the price I was offered. Find my city with scrapecreators/get-v1-facebook-marketplace-location-search. Search Marketplace listings near me, available and sold, with scrapecreators/get-v1-facebook-marketplace-search and read five with scrapecreators/get-v1-facebook-marketplace-item. Find the new price with dataforseo/google-shopping-products-task. Search what to check on this model with serper/search. Finish with a fair price range, how the offer compares, the questions to ask the seller, and what to inspect before paying. Before running anything, inspect each tool with inspect_tool, ask me for any input you don’t have instead of inventing it, and tell me the total price. Wait for my go. At the end, tell me what Agentik charged. ``` ## You provide - The item - Your city - The price you were offered ## What you get: a fair price range and a checklist - A fair price range from sold listings - How the offer compares with the new price - Questions to ask the seller - What to inspect before paying ## How to check a secondhand deal in Claude or ChatGPT Prices are the most each call can reserve for this example: One item near one city, available and sold listings, 5 listings read, one new-price search, 2 Google searches. ### 1. Find listings near you ScrapeCreators finds your city on Facebook Marketplace, lists available and sold listings for the item, and reads five of them. - [Facebook marketplace location search](/tools/scrapecreators/get-v1-facebook-marketplace-location-search.md) `scrapecreators/get-v1-facebook-marketplace-location-search` (ScrapeCreators, 1 city): at most $0.0019 - [Facebook marketplace search](/tools/scrapecreators/get-v1-facebook-marketplace-search.md) `scrapecreators/get-v1-facebook-marketplace-search` (ScrapeCreators, available and sold): at most $0.0038 - [Facebook marketplace item](/tools/scrapecreators/get-v1-facebook-marketplace-item.md) `scrapecreators/get-v1-facebook-marketplace-item` (ScrapeCreators, 5 listings): at most $0.0094 ### 2. Find the new price DataForSEO searches Google Shopping for the new price; the results come back in a few minutes, and fetching them is free. - [Google Shopping product search task](/tools/dataforseo/google-shopping-products-task.md) `dataforseo/google-shopping-products-task` (DataForSEO, 1 search): at most $0.003 - [Google Shopping product search task](/tools/dataforseo/google-shopping-products-task.md) `dataforseo/google-shopping-products-task` (DataForSEO, the results): free ### 3. Learn what to check Serper searches Google for common problems and what to check on the model. - [Google web search](/tools/serper/search.md) `serper/search` (Serper, 2 searches): at most $0.02 ### 4. Judge the deal Your AI writes a fair price range from sold listings, how the offer compares with the new price, questions for the seller and what to inspect. Example total: at most $0.04. Each call is billed for measured usage; unused reservations are released. ## Ask it your way - Is 450 dollars a fair price for a used Herman Miller Aeron in Austin? - What do similar bikes sell for near me on Facebook Marketplace? - What should I check before buying this used camera? - Which questions should I ask the seller? ## Why through Agentik - Marketplace listings, new prices and Google results come from three providers through one connection. - The whole check costs about four cents. ## Good to know - Never pay before seeing the item; your AI lists common scams for the category. - Sold listings show asking prices that sold, not always the final price. ## When to use something else For buyer protection and authentication on expensive items, use a marketplace that offers both. This playbook helps you judge a local deal. ## Secondhand deal check: questions ### Are sold prices the final price? Not always. Sold listings show the asking price that sold, not always what was paid. ### How do I avoid scams? Never pay before seeing the item. Your AI lists the common scams for the category. ### What does the example cost? At most $0.04, reserved before each call and settled at the measured usage. ## Keep going - [Buying guide](/buying-guide.md): Prices across stores on Google Shopping, what video reviewers actually say, what owners report on Reddit after months of use, and expert test results, in one buying guide. - [Is this website legit](/website-legit-check.md): How long a website has existed, its Trustpilot rating and reviews, scam reports on Google and what Reddit says about it, before you pay. - [Competitor price check](/competitor-price-check.md): Every seller of your products on Google Shopping and Amazon with today’s price, competitors’ shipping and promotions read on their own pages, and the coupon codes in circulation. - [E-commerce tools for your agent](/tools/ecommerce.md) - [Social tools for your agent](/tools/social.md) - [Web search tools for your agent](/tools/search.md) [All playbooks](/playbooks.md) · [Connection guides](/docs/clients.md) · [Billing](/docs/billing.md) --- [HTML page](/marketplace-deal-check) · [Agent index](/llms.txt)