求翻译：C to C 房地产电子商务与传统的二手房市场相比，不再受时间和空间的限制，广泛方便的比价、议价、竞价过程可以节约大量的市场沟通成本。另一方面参与的群体庞大，选择的范围更广。是什么意思？

C to c real estate compared to the e-commerce and traditional second-hand markets, no longer limited by time and space, widely convenient prices, bargain, auction process can save a lot of marketing communications costs. Huge on the participation of groups, select a wider range.