Loading...
Answers
MenuCan you build a used car valuation product from Autotrader (or any other online classifieds) data?
Is the price in the listings statistically reliable? Is the data sufficient to build a model?
In my market, there is no car valuation product like KBB, so I'm wondering about building it from the car classifieds data.
Answers
Hmm .. Interesting that you say your sector isn't being addressed. Wonder why ... But if so, then that's an opportunity.
I've spent the past 4 years specializing in probably THE hardest market for making accurate appraisals: the domain name industry. For me as an engineer, that has meant crunching numbers. So I'm intimately familiar with the issues involved in making inferences about value from partial list-price and sale-price data.
In fact, I spend much of each day compiling raw data and building database-driven tools to organize and analyze it.
So I don't know the auto industry at all, but I know a thing or 2 about figuring out the value of assets in obscure areas.
Certainly a model can be constructed for extrapolating value from list prices. It only remains to be determined how wide the margin of error would be and what kind of latent bias might exist.
If you'd like my help, just ask.
Yes, I can help you build a used car valuation product using data from sources like Autotrader, Kelley Blue Book (KBB), Cars.com, CarGurus, etc.
Here’s how we can approach it:
⸻
Goal:
Create a web-based or API-based product that provides estimated value for used cars based on real-time market data.
⸻
Core Features:
1. User Input:
• Make, model, year
• Mileage
• Trim, condition
• Zip code or location
2. Data Collection (Scraping/API):
• Scrape real-time listings from Autotrader or other sites (unless APIs are available)
• Clean and aggregate data
3. Valuation Engine:
• Use regression or machine learning models to estimate value
• Optionally compare to official sources (KBB, NADA, Edmunds)
4. Interface:
• Simple web UI (Bubble, Webflow, or code-based)
• Or an API for integration into other tools
5. Optional Enhancements:
• Price trends over time
• Sellability score
• Alerts for deals on similar cars
⸻
Tech Stack (Options):
• Frontend/UI: Bubble, React, Next.js
• Backend/API: Python (FastAPI), Node.js
• Scraping: BeautifulSoup, Selenium, Playwright (or Scrapy)
• ML/Valuation: Scikit-learn or OpenAI fine-tuned model
• Database: PostgreSQL, Firebase, or MongoDB
⸻
Important Notes:
• Legal/Compliance: Web scraping from sites like Autotrader can violate terms of service. It’s better to use official APIs if available (e.g., KBB API, Carfax API).
• Rate Limits: If scraping, you’ll need rotating proxies and anti-bot strategies.
⸻
Would you like to:
1. Build a quick MVP using scraping?
2. Use legitimate API access (if you have or want to apply for it)?
3. Build just the valuation engine and UI without scraping?
Let me know your preferred direction and budget/tech preference, and I’ll map out a full plan or even build you a starter prototype.
Related Questions
-
How to attract users to both sides of a double-sided marketplace (legal Q & A)?
You could try a "widget" on the lawyer's site which facilitates getting generic questions answered for free. The idea being that in each practice area, there might be a handful of questions that they get asked frequently, and would commit to answering one-time. It could be used to qualify the web visitor (always a good thing) while satisfying the visitor by providing them an answer. Of course, the challenge here is that most lawyers might only be comfortable providing such watered-down generic advice, that the answers themselves wouldn't be very useful. But this way, you could provide value to lawyers somewhat comfortable with online discourse, while building up content. With enough lawyers and content, you could then expand the service to build towards your larger vision. But as John has mentioned, many entrepreneurs have and are actively trying to win with this type of idea and have often struggled. CaseText is a recent YC grad that is doing some interesting work in this area. Happy to talk through your product implementation.TW
-
What support software do most marketplace startups use? Is it custom, or a SaaS product like Zendesk, Desk.com or Uservoice
Your support software should cater to your needs, depending on how your business operates. Fiver uses Vanilla forum and Zendesk. Thumbtack uses Zendesk. Not sure about AirBNB, their help center seems to be custom. Depending on how well funded your are, I would recommend starting with a free plan with one of the help desk SaaS products, or even using open source ticketing platform. Then, as your needs grow and you need integration with your marketplace, there's no reason you can't scale and migrate.VN
-
When creating a marketplace, does it make more sense to focus on stimulating demand first or supply?
Focus on the more difficult side of the marketplace. For instance, if you think it'll be easier to get suppliers, then focus first on getting buyers - always be working on your toughest problem (aka your biggest risk). You'll find some great blogging on Marketplace and Platform topics here http://platformed.info (read the ebook too!)CM
-
Broad niche or Targeted niche which way to go?
I always suggest going "uncomfortably narrow" initially so that you can really dial in the user experience and build liquidity first. Going broad will be tougher as there's too much noise to signal. Also, it's best to fake the supply side initially of you can to improve the buyers side first, then figure out supply & quality afterwards if customers are buying and you've proven out a demand strategy that will work.DM
-
Holding funds in a 2-sided marketplace?
Check out https://www.balancedpayments.com/ They are made for marketplaces. Airbnb CEO among others invested in them and they have some of the best pricing/payout fees. Also some good info on http://www.collaborativeconsumption.com/2013/10/08/online-marketplaces-are-hard/ One of Balanced Payments co-founders is writing this blog series on marketplaces.MA
the startups.com platform
Copyright © 2025 Startups.com. All rights reserved.