I'm here in London for a shorter visit. Is there any place that I can buy Vincent van Gogh's paintings copies in London? I wonder whether National Gallery in London would have any of those?
Many museum shops will sell prints of many of the more notable works in their collection (or even not in their collection, as they subscribe to a service for this), and the National Gallery is no exception. They offer prints of nine Van Gogh paintings, made to order with a variety of options, including online ordering and shipping.
Other vendors offer prints as well, so it makes sense to shop around first.