Feasting on the Word: Additional Essays provides 3 years of commentaries of the alternative readings for time after pentecost which has semicontinuous and typological reading tracks. While wordsearch and Accordance did include these for free into the 12 volume set $25 is hardly a onerous price to pay for completing your lectionary works... Each treatment giving you 4 distinct commentary takes on each of the the lectionary passages.
Also one should note Logos is offering on prepub the Feasting on the Gospels sets to complete its current offering of Matthew... This is NOT an expansion of FOW but all new commentaries written on the complete gospel. So for under $30 per gospel it is like adding 4 new commentaries on the the gospel.
-dan