Browse 38 businesses for sale in Collin County, TX on BizBuySell. Browse 195 businesses for sale in Collin County, TX on BizBuySell.Browse 195 Collin County, TX businesses for sale on BizQuest. Buy or sell your Businesses with BizQuest, the Original Business for Sale Website. Matthew Collin's practice focuses primarily on mergers, acquisitions and other transactions involving public and private investment management firms. Browse 41 Dallas, TX businesses for sale on BizQuest. Discover how much business funding you pre-qualify for with this easy-to-use tool. When an outside lender such as a bank or investment firm finances the purchase of a business, the transaction is frequently called a leveraged buy out or LBO.