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It is not confirmed if this is the best option but it is not a bad option either. You can buy them online and sell them further with no hesitation with accurate SEO optimization and correct surity of copyrights.
Can not say the best but for some extend its is preferable and convent. Sell online is the best thing but some point need to be consider like optimization, SEO, Digital marketing etc. For buys its most preferable and convent.