Retail Group (RTGR: N/R), the managing company for the Velyka Kyshenya supermarket chain, will create a discount network, Prosto Market. According to Interfax, the first outlet was due to open September 29 in Chernihiv region and will have a total retail area of 2,025 ths m2. The company plans another store in Luhansk region by the end of the year and is looking to establish Prosto Market stores in regional and district centers in Ukraine.