How to Become a Reseller

So you’ve finally decided to get into reselling. Well… you honestly couldn’t have picked a better time to start. 

Some of you already know there’s money to be made reselling, but if you’re still on the fence, just consider this:

The secondhand market is absolutely booming right now—valued at $162.5 billion in 2024 and projected to explode to $843.5 billion by 2034.

This means one thing for resellers: huge opportunities—more demand, more buyers, and more potential profit than ever before.

The good news is you don’t need to spend any money or have any experience reselling to get started. 

What you do need, however, is a basic understanding of how to find the right items, flip them, and build a system that works—and that’s exactly what this guide will teach you.

The Building Blocks of a Successful Reseller

What You’ll Learn

Ready to jump in? This guide will show you the ins and outs of successful reselling—from finding valuable items to mastering listing techniques that get attention. Here’s everything you need to start building your reselling skills.

3. Best Items to flip

The best items to sell within different categories.

4. Listing

Create listings that attract buyers for more sales.

5. shipping

The tools you’ll need to ship items like a professional.

6. Reselling strategies

Develop smart strategies for long-term success.

7. Customer service

Build trust, handle questions, and increase repeat sales.

8. Common Mistakes

Save time and money by learning what not to do.

The Numbers

First Year Reselling Part-Time

Here’s what reselling looked like for me while maintaining a 9-5 job with two kids my first year reselling. It goes to show anyone can make this their side hustle.

Buying With Intent
I purchased 281 out of 347 total items under $5.00.
Total Profit
A 300% gain in one year.
Total Dollar Amount Spent
Reinvested all profits back into buying more items.
Highest-Earning Category
Electronics and Gadgets brought in the highest profit margin across all categories.
Items to look for

What Sells?

Here’s a look at my most profitable flips, showing the kinds of items people are interested in that can give you good returns. These examples can help you get a feel for things that are worth picking up when you’re out sourcing.

1965 Stardust “The Munsters” Touch of Velvet Art


This piece came from a family-run estate sale I just happened to be driving by one morning. There was a sign that said “by appointments only” with a number so I called and I was the first one in. With the other items I found during this pick, it probably brought in well over $1,000 in profit.

Sencore SG165 AM-FM Stereo Analyzer

Sencore SG165 AM-FM Stereo Analyzer


I found this stereo analyzer while looking through a local online auction. You can find good items to flip this way, but you have to be disciplined. The price I paid might seem a little high, but I knew the value going into it. I set my limit and made sure not to over-bid myself.