This topic has become near and dear to my heart. I would like to point out that all of the Opera Omnia of St. Lawrence of Brindisi has been translated into English by Fr. Vernon Wagner, O.F.M.Cap., of Mount Calvary, Wisconsin, and most of it has been published. All of his sermons are included in the English Opera Omnia, but the Lutheranismi Hypotyposis and his commentary on Genesis are not included. Franciscan University of Steubenville is one of 4 libraries listed on WorldCat that has the English volumes available in their collection. Some of the sets can be found in libraries of Capuchin houses.
It is possible to order this set of St. Lawerence’s works, or individual volumes from the set, direct from the publisher in India. As far as I can tell, shipping is included in the price (even international shipping). To order, visit this page.