SELECT 
  cscart_product_prices.product_id, 
  MIN(
    IF(
      cscart_product_prices.percentage_discount = 0, 
      cscart_product_prices.price, 
      cscart_product_prices.price - (
        cscart_product_prices.price * cscart_product_prices.percentage_discount
      )/ 100
    )
  ) AS price 
FROM 
  cscart_product_prices 
WHERE 
  cscart_product_prices.product_id IN (
    44071, 44070, 44069, 44068, 44067, 44066, 
    44065, 44064, 44063, 44062, 44061, 
    44060, 44059, 44058, 44057, 44056, 
    44055, 44054, 44053, 44052, 44051, 
    44050, 44049, 44048, 44047
  ) 
  AND cscart_product_prices.lower_limit = 1 
  AND cscart_product_prices.usergroup_id IN (0, 1) 
GROUP BY 
  cscart_product_prices.product_id