In recent weeks, due to the virus-caused isolation, the online marketplaces have become almost the only ones accessible to the majority of people. ArtLaw.club has published an overview of the available options for those wishing to view or buy art online.
Sale of art in the online environment. Part 1: Online marketplaces - https://artlaw.club/en/artlaw/sale-of-art-in-the-online-environment-part-1-online-marketplaces
Further Maria explores eBay model of online auctions, describes differences between online participation in an actual physical auction and online-only auctions, whether you are eligible to use the 14-days right of withdrawal and much more:
Sale of art in the online environment. Part 2: Online auctions - https://artlaw.club/en/artlaw/sale-of-art-in-the-online-environment-part-2-online-auctions