Check whether a secondhand deal is fair

Listings for the item near you on Facebook Marketplace, what similar items actually sold for, the new price on Google Shopping, and what to check before buying.

Steps

At most, per call

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.

Step 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.
Step 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 taskDataForSEO · 1 search$0.003
- Google Shopping product search taskDataForSEO · the resultsFree
Step 3: Learn what to check
Serper searches Google for common problems and what to check on the model.
- Google web searchSerper · 2 searches$0.02
Step 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.
Your agent does this part, with no tool call.

Cost of the example

At most $0.04one run

One item near one city, available and sold listings, 5 listings read, one new-price search, 2 Google searches.

Give this to your agent

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.

3 providers, one connection

What you get

A fair price range and a checklist.

You provide

The item
Your city
The price you were offered

Your agent returns

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

Deal checkExample layout

Signal	Price	Reading
Sold nearby		Fair range
New price		Reference
Your offer		A little high

Placeholders. Your rows come from your run.

Each provider does one part

No single provider covers this job. Your agent calls each one for its part, from one connection.

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.

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.

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