Coinmama is one of these. Fastest: Coinmama There are two main things that can slow down buying cryptocurrency. Disclaimer: This information should not be interpreted as an endorsement of cryptocurrency or any specific provider, service or offering. Disclaimer: eToro USA LLC does not offer CFDs and makes no representation and assumes no liability as to the accuracy or completeness of the content of this publication, which has been prepared by our partner utilizing publicly available non-entity specific information about eToro.