5 Best Selling Apps & Websites to Make Quick Cash Online
Introduction
Hey everyone. It’s Tom here with thisonlineworld.com. I hope you’re all having a fantastic day!
If you want to make money quickly, selling stuff online is one of the best ways to do it. Not only can you declutter your home, but you can also earn extra cash in the process.
There are so many selling apps and websites that make it easier than ever to find buyers—whether locally or internationally.
In this article, I’ll cover five of my favorite selling apps and websites to help you turn unwanted items into cash. Plus, I’ll share my top selling tips and red flags to avoid scams, so be sure to read until the end.
Let’s dive in!
1. Mercari – Best for General Selling
Why Choose Mercari?
Mercari is one of the easiest and most versatile selling apps available. It has millions of users, mainly in the United States and Japan, and lets you list products quickly from your smartphone.
How to Sell on Mercari
- Create a free account.
- Take photos of your item.
- Write a description and set a price.
- List your item and wait for buyers.
What Can You Sell?
Mercari allows you to sell almost anything, including:
- Clothing & Accessories
- Electronics
- Home Goods
- Toys & Video Games
- Sports Equipment
Even cars and luxury goods are sold on Mercari, making it a great option for various items.
Fees & Shipping
- Seller Fees: ~10%
- Payment Processing Fee: 2.9% + $0.30
- Shipping: Discounted rates with FedEx & UPS, or charge the buyer for shipping.
Pros & Cons of Mercari
✅ Easy to use
✅ Large buyer base
✅ Discounted shipping options
❌ Seller fees can add u
2. Decluttr – Best for Selling Electronics
Why Sell on Decluttr?
If you have old electronics, Decluttr is one of the easiest platforms to sell them quickly.
What Can You Sell?
- Smartphones & Tablets
- Laptops
- Video Games & Consoles
- DVDs & CDs
- Wearable Tech (Smartwatches, Headphones, etc.)
How to Sell on Decluttr
- Enter details about your tech product on their website.
- Decluttr gives you an instant price quote.
- Print a prepaid shipping label and send the item.
- Get paid the next day via PayPal or check.
Pros & Cons of Decluttr
✅ Fast & simple process
✅ Free shipping label
✅ Next-day payment
❌ Prices are lower than selling directly to buyers
3. Facebook Marketplace – Best for Local Sales
Why Use Facebook Marketplace?
Facebook Marketplace is perfect for in-person cash sales and reaching local buyers.
How to Sell on Facebook Marketplace
- Take photos of your item.
- Write a title & description.
- Set a price.
- Wait for buyers to message you.
- Meet in person for payment.
Tips for Selling on Facebook Marketplace
- Avoid lowball offers – Set a firm price.
- Meet in a public place – Stay safe.
- Only accept cash or Facebook-approved payments.
Pros & Cons of Facebook Marketplace
✅ No seller fees
✅ Fast, local sales
✅ Wide variety of items can be sold
❌ Some buyers may ghost you or negotiate aggressively
4. OfferUp – Best for Flexible Selling
Why Sell on OfferUp?
OfferUp is like a mix of eBay, Mercari, and Facebook Marketplace, offering both local and international sales.
What Can You Sell?
- Clothing & Accessories
- Electronics
- Baby & Kid Products
- Pet Supplies
- Shoes & Beauty Products
How OfferUp Ensures Safety
OfferUp has verified meeting spots near police stations or public areas, making it a safer option for local sales.
Selling Options & Fees
- Local Sales – No fees
- Online Sales – 12.9% seller fee
Pros & Cons of OfferUp
✅ Safe in-person meetups
✅ Option for both local & online selling
✅ No fees for local transactions
❌ Seller fees for online sales
5. Niche Marketplaces – Best for Specific Items
If you have specialized items, you can sell on niche platforms for better pricing and faster sales.
Best Niche Marketplaces
- SidelineSwap – Sports gear
- Poshmark & Depop – Fashion & accessories
- CardMarket – Pokémon & sports cards
When to Use Niche Marketplaces
- If you specialize in selling a certain product type.
- If you want to reach collectors or enthusiasts.
- If you want higher profits than general marketplaces.
Pros & Cons of Niche Marketplaces
✅ Better prices for rare items
✅ Highly targeted audience
❌ Fewer buyers than major platforms
Seller Tips & Avoiding Scams
1. Know Your Bottom Price
- Expect negotiation.
- Ignore lowball offers.
- Stick to your minimum selling price.
2. Watch for Red Flags
- If an offer seems too good to be true, it probably is.
- Be cautious of buyers offering more money than requested.
3. Use Secure Payment Methods
- Never accept checks or wire transfers.
- Use the platform’s recommended payment method to avoid scams.
Conclusion
Selling your old stuff is a great way to make quick cash while decluttering your home.
Whether you prefer in-person local sales (Facebook Marketplace, OfferUp) or online shipping (Mercari, Decluttr), there’s an option for everyone.
Have you used any of these selling apps before? Let me know in the comments!
And as always, don’t forget to check out thisonlineworld.com for more tips on making & saving money.
Happy selling! 🚀
