How to Use Comet Assistant to Check Prices Before You Buy

By:
Chad Latta
Updated:

This post contains affiliate links. If you use these links to buy something I may earn a commission. Thanks!

Ever wonder if you’re overpaying when shopping online? I just found a trick that takes 10 seconds and can save you money.

Here’s what happened this week.

My $15 Discovery

I’ve been looking at phone gimbals (those stabilizers for shooting smooth video on your phone). Found a DJI Osmo Mobile 7P on Best Buy for about $200.

But before I clicked “buy,” I had a thought: what if I’m overpaying?

So I tried something. I opened Comet browser, clicked the assistant icon, and asked one simple question:

“Is this the best price for this product?”

That’s it. One question.

Comet read the Best Buy page, searched the web, and gave me an answer in about 5 seconds. Turns out Best Buy had a decent price, but I found it $15 cheaper on Amazon.

Not life-changing money, but I spent 10 seconds asking a question instead of 20 minutes manually checking prices across sites.

Disclosure: I may earn a small commission if you purchase through my affiliate links, at no extra cost to you.

Comet Assistant checking price for DJI Osmo Mobile 7P gimbal on Best Buy, showing comparison with Amazon prices
Comet Assistant comparing Best Buy’s $126.99 price with Amazon’s pricing in real-time

What Is Comet Assistant?

Comet is a free browser from Perplexity (the AI search company). The assistant feature lives in the sidebar and can read whatever webpage you’re on.

You can download the browser here, and for a limited time get a free month of Perplexity Pro!

It’s not just another chatbot. It can see the product you’re looking at and search the web to compare prices, read reviews, or find alternatives.

If you’re new to Comet, check out our complete Comet Browser guide.

How to Use It for Price Checks

Step 1: Download Comet browser (it’s free)

Get it here: Comet Browser, This includes a free month of Perplexity Pro. (if you prefer to not get a free month of Perplexity Pro, go here).

Step 2: Browse to any product page

Go to Amazon, Best Buy, Walmart, wherever. Find a product you’re considering buying.

Step 3: Click the Comet icon in the sidebar

It’s usually on the right side of your browser window.

Step 4: Ask your question

Try these:

  • “Is this the best price for this product?”
  • “Where else can I buy this cheaper?”
  • “Are there better alternatives to this product?”

Step 5: Review the results

Comet searches the web and gives you an answer in seconds. It shows you sources so you can verify.

Want to master all of Comet’s features? See our complete browser guide.

What I Like About This

No manual work:

  • No copying product names
  • No opening multiple tabs
  • No comparing prices manually
  • Just ask and get an answer

It’s fast:
My gimbal price check took 5 seconds. That’s faster than typing the product name into Google.

It’s honest:
Comet doesn’t try to upsell you. It just gives you information based on what it finds.

When It Works Best

Good for:

  • Quick price comparisons (under $500)
  • Common products with multiple sellers
  • Items on major retail sites (Amazon, Best Buy, Walmart)
  • Checking if a “sale” is actually a deal

Not great for:

  • Major purchases (cars, houses, expensive electronics)
  • Niche products with limited availability
  • Items from unknown websites
  • Anything where you need detailed specs comparison

I wouldn’t use this for a $2,000 laptop. But for everyday purchases under $500? It works.

Real Results

Here’s what I’ve tested it on:

Phone gimbal (DJI Osmo Mobile 7P):

  • Best Buy: $199
  • Comet found it for: $184 on Amazon
  • Saved: $15

Wireless earbuds:

  • First site: $89
  • Comet found them for: $79 on different retailer
  • Saved: $10

Kitchen gadget:

  • Amazon: $45
  • Comet confirmed: Best available price
  • Saved: $0 (but got peace of mind)

Not huge savings, but it adds up. More importantly, it takes 10 seconds instead of 20 minutes of manual research.

How to Get It

Comet is free to download. Right now, you also get Perplexity Pro free for a month when you sign up (no credit card needed).

Get Comet here: [Download link with affiliate]

Students: If you have a .edu email, you get a full year of Perplexity Pro free (worth $240).

Quick FAQ

Q: Is this safe?
A: Yes. Comet can see the webpage you’re on, but it can’t access your passwords or payment info.

Q: Does it work on all shopping sites?
A: It works best on major retailers (Amazon, Best Buy, Walmart, Target). Smaller sites are hit or miss.

Q: Do I need Perplexity Pro?
A: No. The free version works fine for price checks. Pro just gives you better AI responses for complex questions.

Q: Can it find coupon codes?
A: Sometimes. You can ask “Are there any coupon codes for this product?” and it’ll search for them.

The Bottom Line

If you shop online regularly, this is worth trying. It’s free, it’s fast, and it can save you money.

I’m not saying it’ll find huge discounts every time. But for everyday purchases, it takes 10 seconds to check instead of 20 minutes of manual research.

That’s a win in my book.

Download Comet, try it on your next purchase, and see if it saves you money.

Quick heads up on a legit deal

Right now you can download Comet and get Perplexity Pro free for a month. No credit card, no automatic billing, no catch. I’ve been using it for the past couple weeks and it genuinely makes browsing faster.

Try Comet + Get Pro Free

Students: You get a full year free (worth $240) with a .edu email. Grab the student offer here.

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