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 (
    50522, 50521, 50520, 50519, 50518, 50517, 
    50516, 50515, 51281, 50485, 50484, 
    50462, 50461, 50103, 50447, 50408, 
    50465, 50464, 50463, 50393, 50389, 
    50388, 50387, 50072, 50267, 50234, 
    50233, 50232, 50231, 50230, 50229, 
    50228, 50227, 50226, 50225, 50224, 
    50223, 50067, 50066, 50065, 50064, 
    50275, 50274, 50269, 50265, 50039, 
    50001, 88490, 88489, 50040, 50034, 
    50033, 50025, 50152, 50151, 50124, 
    50123, 50122, 49944, 50110, 50107, 
    49954, 49953, 49952, 49951, 49950, 
    50219, 50218, 50217, 50216, 50215, 
    50214, 50213, 50212, 50211, 50210, 
    50209, 50208, 50207, 50206
  ) 
  AND cscart_product_prices.lower_limit = 1 
  AND cscart_product_prices.usergroup_id IN (0, 1) 
GROUP BY 
  cscart_product_prices.product_id