Do not fall for this.
This is a "Nigerian prince scam"
Step 1)
Offer free monies (inheritance scam) or free product (like a sweater)
Step 2)
Send the victim (you) money - through PayPal, bank, or something else
Step 3)
Tell you to purchase the product or pay for shipping, stamps, etc
Step 4)
You now have sent their company money with money that they sent you, so all seems fine.
This is when they strike. The scammer will now reverse the original transaction, taking back the money they gave you.
Step 5)
PayPal gives them their money back because they will claim their account was hacked or they sent to wrong person - some sort of excuse.
However, you purchased the sweater (or paid for shipping, taxes, etc) and the money will be removed from your personal account.
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So... In other words, they send you like $50 to use. If your account balance was $100, you now have $150 in PayPal. You then purchase the sweater, shipping, taxes, etc for $50. You now have $100 in your account. The scammers then force PayPal to refund their original $50 because they pretend they were hacked and didn't send you it. Now the scammers have their original $50 back, plus you just paid them $50 for a product. This comes out of your PayPal and you would now have $50 balance instead of $100, while the scammers gained a free $50 and probably won't even send you the sweater.
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It's known as a Nigerian prince scam because in the late 90s, 2000s and even now, there are millions of emails being sent out to uninformed targets such as yourself. These emails will claim that you have won a reward, are eligible for an inheritance, can get a free product, etc. Sometimes they will send you money to use and then chargeback like they most likely want to do to you. Other times they will ask you to pay for processing fees so they can give you the money/product you won - but they will disappear once you pay. The scam has adapted over time, but has been known to reference a "Nigerian prince" who died & is somehow related to you. Often the country name will change, but the scam will pretend you are related through blood for an eligible inheritance of millions of dollars or hundreds of thousands.
It's surprising, but when they send out 100,000 emails the chance of a few people falling for it is quite high. This means that a poor person in a third world country can earn as little as $10-20 and still be extremely happy. Some people in India for example can survive on $1-3 USD per day. Other countries are survivable with less, or a bit more, so even pulling off just one scam for $20-50 can be enough for the scammer to:
-> get paid
-> pay his boss the cut
-> continue tomorrow