Jim and Kathy Mellon serve a network of house churches in and around Killeen, TX. Since 1992 this network has contributed more than $1,000,000 to the work of the Kingdom around the world. See http://www.story.house2house.com/2010/05/21/the-big-bang-for-your-bucks-theory/
So, when Jim speaks about giving in house church, he is worth listening to. See below for his comments at a LK10 Training Conference about the importance of giving and supporting church planters.