SAGOM Press ... a close relation to St. Vladimir's in terms of market appeal

https://shop.stanthonysmonastery.org/ is the bookstore site for St. Anthony's Greek Orthodox Monastery. They have an excellent collection of early church fathers at reasonable prices  These are a very satisfactory collection to read when moving beyond Popular Patristics. Examples

• The Fifty Spiritual Homilies -- Saint Makarios the Great
• Homilies on the Epistle to the Galatians -- Saint John Chrysostom
• Homilies on the Epistle to Philemon - Saint John Chrysostom
• The Life of Saint Columba of Iona - Saint Adamnan of Iona
• On the Holy Spirit - Saint Basil the Great
• Catechetical Homilies - Saint Cyril of Jerusalem
• Baptismal Instructions - Saint John Chrysosotom
• Panegyrics on Saint Basil and Saint Athanasios - Saint Gregory the Theologians
• The Divine Names and The Mystical Theology - Saint Dionysios the Areopagite
• The Life of Saint Makrina & On Virginity - Saint Gregory of Nyssa
• Exchatological Hymns and Homilies -- Saint Ephraim the Syrian
• Exact Exposition of the Orthodox Faith - Saint John of Damascus
• The Confession -- Saint Patrick of Ireland
• My Life of Saint Daniel the Stylite
• My Life in Christ - Saint John of Kronstadt
• The Life of Saint John the Merciful
• The Life of Saint Hilarion the Great -- Saint Jerome
• An Ascetic Bishop: Stories, Sermons, and Prayers of St. Nephon