Specialty retailer of large-size women's fashion apparel, United Retail Group Inc, on Wednesday posted a two per cent rise in August same-store sales and a four per cent rise in monthly sales to $27.3 million from 2001. The New Jersey-based operator of 556 stores said for the fiscal year to date, total sales increased six per cent to $256.5m from $242.5m, and same-store sales were up three per cent.