Ideas & Opportunity

How do I research market size and timing when I can only spend a weekend and have no budget for reports?

A starting point

Skip the paid reports entirely; you can get a defensible first estimate for free in a weekend. Count supply-side proxies (how many businesses, how many searches, how many people in the relevant groups or subreddits), read the earnings calls or annual reports of public companies near your space for real numbers, and talk to five potential customers about what they spend today. As a starting point, aim for a number you can explain in two sentences and defend under questioning, not a precise number you can't back up.

Go deeper

Hand-picked from around the web, each with a note on why it earns your time.

3 resources 3 link-checked Watch Read Use

Watch

▶️ Video
✓ Link checked Free Beginner

Why we picked it When you have no budget and one weekend, the highest-signal research isn't a report, it's a handful of real conversations, and this YC talk is the clearest guide to doing them well. Gustaf Alstromer shows exactly what to ask so users hand you real problems instead of polite opinions. It reframes market research from something you buy into something a solo founder can just go do.

How To Talk To Users | Startup School

On Y Combinator by Gustaf Alstromer ~20 min

How To Talk To Users | Startup School
  • A five-minute honest conversation beats thousands of survey responses for understanding whether a market's pain is real.
  • Ask about the person's past and present behavior, not hypothetical futures or whether they like your idea.
  • Hold your solution back until the end (or leave it out) so you don't bias what people tell you.
Watch on YouTube youtube.com →

Read

📄 Article
✓ Link checked Free Beginner

Why we picked it This lays out both the top-down (start from a big industry number) and bottom-up (build up from your own price times likely customers) ways to size a market, with formulas and a worked example. The bottom-up method is the one you can actually run over a weekend with public numbers and honest assumptions, no paid report needed. Use it to reach a rough first estimate you can defend, then keep refining as you learn.

TAM, SAM & SOM: What Do They Mean & How Do You Calculate Them?

From HubSpot Blog by Clifford Chi ~12 min read

  • Bottom-up sizing (customers you can realistically reach times your price) is more defensible for an early founder than a scary top-down billion-dollar number.
  • Free public inputs get you far: company 10-K filings, government statistics, and competitor customer counts stand in for paid reports.
  • Run both top-down and bottom-up and see if they roughly agree; a wide gap means one of your assumptions is off.
Open blog.hubspot.com →

Use

🛠️ Tool
✓ Link checked Free Beginner

Why we picked it Before you spend a weekend guessing, Google Trends gives you a real, free read on whether interest in your idea is rising, flat, or fading, and where in the country it's strongest. For a founder building outside the big startup hubs, the geography and city-level view is genuinely useful: you can see if demand clusters somewhere you can actually reach. Treat it as a demand signal to start from, not proof on its own.

Google Trends

From Google by Google

  • Search interest is shown 0 to 100 relative to its own peak, so it tells you direction and seasonality, not absolute customer counts.
  • Filter by region and city, and by Web, YouTube, News, or Shopping, to see where and how people are actually looking.
  • Compare a few terms side by side (yours plus close alternatives) to sanity-check which framing people search for.
Open trends.google.com →

People also ask

How big does my market need to be for this to be a real business? It depends on your ambition: a bootstrapped indie business can thrive in a market worth a few million, but a venture-backed one needs a market that... Intermediate 3 resources → What are TAM, SAM, and SOM and how do I actually calculate them? TAM is everyone who could ever use your category, SAM is the slice your product and geography can actually serve, and SOM is the realistic chunk yo... Intermediate 2 resources → Why does 'why now?' matter so much for a startup idea? Most great startups ride a change that just made something newly possible or newly cheap: a new technology, regulation, behaviour, or cost curve. I... Intermediate 3 resources → My market is small right now but growing fast. Is that a problem? A small, fast-growing market often beats a big, flat one, because you can ride the growth instead of stealing share in a knife fight. Investors and... Intermediate 3 resources → How do I size a market for India specifically when data is messy? Ignore the '1.4 billion people' headline; the real spendable market in India is a fraction of that. Use frameworks like Blume's India1/India2/India... Advanced 3 resources → Should I worry that my market is already crowded with competitors? A crowded market is proof that people will pay, which is a good sign, not a red flag. What kills you is entering a crowded market with no sharp wed... Intermediate 3 resources →