Ebby Halliday purchases luxury real estate firm--EXPLODE--http://www.dallasnews.com/sharedcontent/dws/bus/stories/052207dnbushallidaypurchase.8f0e9a1c.html--EXPLODE--Dallas Morning News - Dallas residential sales firm Ebby Halliday Realtors said Monday that it has purchased an independent high-end real estate firm. Dave Perry-Miller & Associates, which specializes in luxury home sales, is merging with Ebby Halliday - already North ...