If your new dress doesn't fit right or a gadget arrives broken, Amazon accepts returns on most sales within 30 days of delivery. In general, third-party sellers offer the same policy, although you'll usually have to pay for return shipping to the seller unless the seller advertises free returns, whereas Amazon often provides a prepaid shipping label for its own returns. The cost of the return may be subtracted from the refund if the item was returned for some other reason than Amazon's mistake.
Amazon derives many of its sales (around 40% in 2008) from third-party sellers who sell products on Amazon. Associates receive a commission for referring customers to Amazon by placing links to Amazon on their websites if the referral results in a sale. Worldwide, Amazon has "over 900,000 members" in its affiliate programs. In the middle of 2014, the Amazon Affiliate Program is used by 1.2% of all websites and it is the second most popular advertising network after Google Ads. It is frequently used by websites and non-profits to provide a way for supporters to earn them a commission. Amazon reported over 1.3 million sellers sold products through Amazon's websites in 2007. Unlike eBay, Amazon sellers do not have to maintain separate payment accounts; all payments are handled by Amazon.