Ebay is a bellwether. It's been around since nearly the start of the online boom. But, like any other platform, success can seem fleeting if you don't know what you're doing. Selling items on eBay, professionally that is, can be an art form. Getting people interested in your auctions isn't always easy, especially when there's hefty competition and low demand for what you're selling.
If you’re trying to figure out how to make extra money (and really, who isn’t?), it can be hard to know what’s a legit way to score some extra cash and what’s just a total waste of your time. We’ve done the searching for you and found 30 ways to make extra money—everything from wrapping your car with a banner advertisement to renting out the baby equipment collecting dust in your attic.

Electronics, DVDs, CDs, Video Games:  Decluttr buys your old CDs, DVDs, games, books, LEGO®, and technology. Select your technology or scan the barcode on your media items for an instant valuation. Once you accept an offer, Decluttr will send you a free shipping label. All you have to do is pack a box and drop it at your nearest UPS location or schedule a pick-up.
Clothing:  thredUp makes it easy to sell clothes online. To sell your items, order a free “Clean Out Bag” on thredUP’s website. Then send in your shoes via FedEx or USPS. Once they arrive, thredUp will inspect your items before listing. Their site says they accept less than 40% of items in the average Clean Out Bag. Make sure your items are clean, name-brand, less than five years old, and in excellent condition to increase your chances. Depending on the popularity of the clothing items you send in, you will be paid either after processing, or once your items sell.
Amazon: Many people don’t realize that Amazon is a haven for third party sellers, including regular Joes and Janes cleaning out their attics and garages. If you plan to sell more than 40 items per month on Amazon, consider registering as a professional seller. You’ll need to pay a $39.99 monthly subscription fee, a referral fee that usually ranges from 6% to 20%,  and a $1.35-per-item closing fee for media items. You won’t pay the $0.99-per-item selling fee, however. Alternatively, register as an individual seller. The fee schedule is the same as for professionals, except you do have to pay the selling fee and don’t have to pay the subscription fee.
20. Etsy – If you like to create arts and crafts, you can sell them on Etsy.It’s completely free to open an Etsy store. You simply sign up, post pictures of your creations and starting selling. You can choose your payment option, but PayPal is generally the easiest. Etsy makes it easy to sell and keep track of your inventory. There is a small listing fee and they take 3.5% of every sale you make.

Another great way to earn money from your home office is to sell your skills or knowledge by teaching classes through Udemy or Coursera. For instance, if you’re an exercise guru, you might start an exercise class in a large spacious area in your home. People are willing to pay to learn about many fields of knowledge, from cooking and gardening to soap or candle making. Playing a musical instrument, child birthing, dancing, dog training, yoga, and even foreign languages are all great topics for expert classes.
If you’re good with Photoshop and can work quickly you might make some decent cash with this online business. Are you a graphic designer or do you have some artistic talents that you know others are looking for? Why not make extra money for your bottom line by designing logos or other graphics for people’s websites, for their newsletters or for other print applications?
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.
Experience. Whatever area you want to work in as a consultant, you must be able to show clients that you’re qualified to advise them. If there are organizations related to your field, make sure that you’re a member of them. Similarly, if you can take a course and become certified or registered in your field, do it and then add that to your credentials.
If you want to clear some space out in your house and have a big stack of books you’ve been holding onto for too long, you can make money selling your books and textbooks online. Stores like Half Priced Books and others will give you cents on the dollar for each of your current books while you can check what your book is worth by simply entering the ISBN number on Book Scouter.

You'll also need ecommerce software, fulfillment software, worry about warehousing, customer service and refunds. But that's not all. You'll also need traffic. Think search engine optimization, Facebook ads, and other social media campaigns. It is hard work, especially on your own. You could opt for Amazon's platform, which might be an easier route. But, then again, at the end of the day, this is a serious business, which could produce significant profits. So you're either all in or you're not. 
More than half a billion products are sold on Amazon every month, making it an incredible opportunity to make money online. But, like everything else that involves making money online, you have to do quite a bit of work to earn it. One option on Amazon is to find products that are already made and buy and sell them at a discount. For example, you could research generic products such as clocks, keychains and mugs to attach to your brand.
Etsy: While Etsy's popularity has declined recently, it's still a great resource for selling handmade items online. No need for complex ecommerce sites or merchant accounts or any sort of automation. The company takes a commission of every sale and charges a small listing fee per item. But many still use Etsy as their primary source of income. The best part is that you can also sell digital products such as poster designs. 
Make sure your investment portfolio is well-diversified. This means you should invest in both stocks and bonds as well as different sectors like technology, banks, and consumer goods. Also, consider alternative investments like real estate through a platform like DiversyFund. You can also use Masterworks gives investors the opportunity to invest in fine art, which has outperformed the S&P 500 by more than 250% since 2000.
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