How to Pick Bestsellers for Facebook Ads Using Price Data

Not all products deserve ads. Learn how to use price data to pick bestsellers that convert profitably on Facebook Ads and boost ROAS.

Running Facebook Ads as an e-commerce owner can feel like burning money if you're not careful. The average Cost Per Click (CPC) is rising every year, and unless you promote the right products, you risk spending more on ads than you ever make back.

Here's the secret: not all products deserve your ad dollars. To win with Facebook Ads (and other platforms like Instagram, TikTok, and Google Shopping), you need to promote bestsellers that are competitively priced, profitable, and proven to convert.

That's where price data comes in. By tracking your competitors' prices and analyzing your own margins, you can identify which products will give you the highest Return on Ad Spend (ROAS).

In this article, we'll cover:

• Why product selection makes or breaks ad campaigns.
• How to use price data to choose bestsellers.
• Which platforms (Facebook, Instagram, Google, TikTok) work best for each product type.
• Pro tips to avoid wasting ad budget.

Why Choosing the Right Product Matters in Facebook Ads

Imagine running a $500 ad campaign on a product that earns you only $5 per sale in profit. Even if you get 100 sales, you've burned your budget.

Now imagine running the same campaign on a product that earns you $25 per sale in profit. Suddenly, the numbers work out—even with fewer conversions.

That's why product selection > ad copy or targeting. Without the right product, even the best ads won't save you.

Step 1: Use Price Data to Find Profitable Products

Before spending a dollar on ads, ask: Which of my products has the best margin AND competitive price?

With tools like PriceSense, you can:

• Track competitor prices in real-time. If competitors are charging more, you can run ads confidently.
• See historical price drops. Avoid products stuck in a race-to-the-bottom price war.
• Compare across multiple sellers. Identify where you have a pricing advantage.

Step 2: Identify Bestsellers Through Demand

Not every product with good margins will sell well. Look for items with proven demand:

• Check past sales in your store (what consistently sells without ads?).
• Look at competitor promotions (which products do they push hardest?).
• Track seasonal trends (back-to-school laptops, holiday headphones, summer fitness gadgets).

Bestsellers often fall into evergreen categories like:

• Electronics & accessories
• Beauty & personal care
• Home & kitchen essentials
• Fashion staples

Step 3: Match Products to Ad Platforms

Not all ad platforms are equal. Choose based on product type + buyer intent:

Step 4: Factor In Margins and Ad Spend

A simple formula helps:

If your profit margin is slim, you'll struggle to scale ads. Use price tracking to ensure your products aren't just popular—they're profitable compared to competitors.

Step 5: Test and Scale

Start small:

• Run $10–$20/day ads on 3–5 candidate products.
• Track which products give the best ROAS.
• Kill underperformers, scale winners.

Use price tracking alongside ad data to fine-tune. If competitors suddenly slash prices, pause ads until you regain a pricing advantage.

Common Mistakes to Avoid

• ❌ Running ads for every product in your store.
• ❌ Ignoring competitor prices when picking products.
• ❌ Promoting low-margin products that can't survive ad costs.
• ❌ Not testing before scaling.

Pro Tips for Picking Ad-Worthy Bestsellers

• Use PriceSense alerts: Know instantly when you undercut competitors—perfect ad timing.
• Look for bundle opportunities: Promote 2-for-1 or accessory bundles to raise AOV.
• Avoid "race to the bottom" niches: If competitors constantly discount, margins vanish.
• Retarget abandoned carts: Combine strong pricing with retargeting ads to recover lost sales.

FAQ: Picking Products for Facebook Ads

Conclusion

Choosing the right products for Facebook Ads isn't guesswork—it's data-driven. By combining price tracking with demand analysis, you'll know exactly which products deserve your ad spend.

The result? Higher margins, stronger ROAS, and fewer wasted ad dollars.