TL;DR
Slickdeals is the biggest. Real shoppers post deals and vote on them. Best for tech, price mistakes and very low prices. The comments are the best part, but the site is busy and can feel like a lot.
Dealmoon (北美省钱快报) is the main deal site for Chinese-speaking shoppers in the US, Canada and the UK. Best for beauty, fashion, luxury and Asian food and grocery deals. Most of it is in Chinese.
DealNews is run by editors, not users. Deals are checked before they go up. It is calm and easy to read, but you see fewer "crazy" deals.
Brad's Deals is also editor-picked, with a focus on home, fashion and everyday family shopping. Very friendly, not very deep for tech.
Price trackers like camelcamelcamel and Keepa are not deal sites. They show if an Amazon "sale" price is actually low. Use one before you buy.
Short answer: Use Slickdeals for electronics, Dealmoon if you read Chinese or shop beauty and fashion, and DealNews or Brad's Deals if you just want a short list of safe picks. Or use a site that pulls from all of them so you don't have to check four places.
I check deal sites more than I should. Some days it's three or four of them before lunch. After years of this I have opinions, so here they are.
All of these sites are free. All of them make money when you click a link and buy something (that is called an affiliate link). That's normal and it doesn't cost you more. But it is good to know, because it means every site wants you to click.
The real difference is who picks the deals and who the site is for.
What I like:
The comments. This is the real reason to use it. Someone will tell you the "sale" price was lower last month, or that the model is old, or that there's a coupon that takes off another $20. You learn more in the comments than in the post.
It's fast. Price mistakes and very short deals often show up here first.
Great for tech. Laptops, TVs, SSDs, graphics cards. The community knows this stuff.
What I don't like:
It's a lot. There are many posts, many ads and many sections. New users get lost.
Votes are not perfect. Some deals get pushed up because people are excited, not because the price is good.
Good deals sell out fast. If you see it on the Frontpage late, it may be gone.
Use it if: you shop for electronics, you like reading what other buyers think, and you don't mind some noise.
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Dealmoon (北美省钱快报)
If you are Chinese and live in North America, you probably already know Dealmoon. Your mom might be the one who told you about it. It's the go-to deal site for Chinese-speaking shoppers, and it covers the US, Canada and the UK.
Dealmoon is different from the others in a few ways:
It's mostly in Chinese. There is some English, but the main site and app are written for Chinese readers.
The focus is different. You'll see much more beauty and skincare, designer bags, fashion, Asian supermarket deals, and travel. Less "$40 off a graphics card."
It's part deal site, part community. People post photos of what they bought (晒货), write reviews and share shopping guides (攻略). Think a little bit of Xiaohongshu mixed with a deal site.
What I like:
Great for beauty and fashion sales. Sephora, Nordstrom, Saks and brand sites get covered in detail, with codes and gift-with-purchase notes.
The guides help a lot during big sales like Black Friday, with store-by-store lists.
For older family members who are more comfortable in Chinese, this is often the only deal site they will use.
What I don't like:
If you don't read Chinese, it's hard to use.
Lots of posts are about fashion and lifestyle. If you only want tech deals, you'll scroll past a lot.
Some posts read more like ads than deals. You need to check the price yourself.
Use it if: you read Chinese, or you mostly shop beauty, fashion, luxury and Asian grocery.
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DealNews
DealNews is one of the oldest deal sites (it started in 1997). The big difference is that editors pick the deals, not users. They check the price history before posting, and they often add a note like "lowest price we've seen."
What I like:
It's calm. You open it, you see a clean list, you're done.
You can trust the prices more, because someone checked.
Good for people who don't want to read 200 comments.
What I don't like:
Fewer surprise deals. Price mistakes and very short deals often don't make it.
No big community, so you lose the "wait, there's a better one" advice.
Use it if: you want a short list of safe deals and you don't have time to dig.
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Brad's Deals
Brad's Deals is also editor-run. It feels more like a friendly shopping newsletter than a forum. The team picks deals from big stores and adds a short note on why each one is worth it.
What I like:
Very easy to read. Good for home goods, clothes, kids' stuff, and gifts.
Good coupon and store pages.
Less pushy than some other sites.
What I don't like:
Not deep for tech or PC parts.
Fewer deals overall, so you can miss things.
Use it if: you shop for your home or family and like a simple, curated list.
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Price trackers: camelcamelcamel and Keepa
These are not deal sites, but you should know about them. They track Amazon prices over time and show you a chart.
Why it matters: a lot of "50% off" deals are not really 50% off. The "list price" was never real. A price chart shows you what the item actually sold for over the last few months. If today's price is the lowest in a year, great. If it was cheaper two weeks ago, wait.
You can also set an alert. Pick a price, and they email you when it drops there.
Use them: every time before you buy something big on Amazon. It takes 10 seconds.
So which one should you use?
Here's how I'd do it:
Buying a laptop, TV or PC parts? Slickdeals first, then check the price on camelcamelcamel or Keepa.
Buying skincare, makeup, a bag or clothes? Dealmoon, especially during big sales.
Don't have time and just want good picks? DealNews or Brad's Deals.
Shopping for parents who read Chinese? Dealmoon, no question.
The annoying part is that the best deal might be on any of them. The same deal often shows up on two or three sites, and sometimes one site has it hours before the others.
A note about DealBert
This is our site, so take this part with that in mind. We built DealBert because we were tired of checking four places. It pulls deals from many deal sites into one list, groups the same deal when several sites post it, and ranks those higher (if three sites posted the same deal, it's probably good). An AI also rates each deal from 0 to 100 against what the product usually costs, so you can skip the fake "50% off" posts. Deals can also be shown in Chinese.
It's not a replacement for the Slickdeals comments or Dealmoon's guides. Those communities are the reason the deals exist in the first place, and every deal on DealBert links back to the original post. It's just a faster way to see what's good today.
FAQ
What is the best deal site in the US? For most people, Slickdeals, because it's the biggest and has the most active community. For Chinese-speaking shoppers, Dealmoon. For a short, editor-checked list, DealNews.
Is Dealmoon only in Chinese? Mostly. The main site and app are written for Chinese readers, and there is some English content. It covers deals in the US, Canada and the UK.
Are deal sites free? Yes. They earn money from affiliate links when you buy. You don't pay more because of it.
Is Slickdeals better than DealNews? They are different. Slickdeals is user-voted and faster, with better comments, but noisier. DealNews is editor-picked and cleaner, but has fewer surprise deals.
How do I know if a deal is real? Check the price history. For Amazon, use camelcamelcamel or Keepa. If the price was lower in the last few months, it's not a great deal.
Do I need to use more than one deal site? It helps, because good deals show up on different sites at different times. You can also use an aggregator that collects deals from many sites in one place.