product        store_id    price
         antacid          101       9.37
         antacid          102      11.78
         antacid          103      10.05
         antacid          104      12.13
         antacid          105      11.14
         antacid          202       8.23
         antacid          203       8.17
         antacid          206       7.50
         antacid          207       9.02
         antacid          208       7.56
         antacid          210       9.23
         antacid          305       8.25
         antacid          306       8.10
         antacid          308       6.73
         antacid          311       9.11
         antacid          313       8.61
         antacid          314       7.67
         antacid          315       8.42
         antacid          406       7.91
         antacid          407       7.48
         antacid          413       8.82
         antacid          415       8.50
         antacid          417       6.89
         antacid          424       8.32
         antacid          426       8.22
         aspirin          101       4.37
         aspirin          103       6.57
         aspirin          104       5.58
         aspirin          105       7.02
         aspirin          203       4.63
         aspirin          205       3.60
         aspirin          208       5.38
         aspirin          210       6.66
         aspirin          305       5.08
         aspirin          306       5.11
         aspirin          308       3.95
         aspirin          311       6.08
         aspirin          313       5.35
         aspirin          315       3.78
         aspirin          406       3.60
         aspirin          407       6.16
         aspirin          415       6.98
         aspirin          417       4.16
         aspirin          424       4.69
         aspirin          426       5.44
         cough medicine   101       7.86
         cough medicine   102       5.85
         cough medicine   103       7.82
         cough medicine   104       6.48
         cough medicine   105       7.20
         cough medicine   203       5.68
         cough medicine   206       6.68
         cough medicine   207       5.24
         cough medicine   208       4.73
         cough medicine   210       3.53
         cough medicine   213       5.65
         cough medicine   305       3.96
         cough medicine   306       5.59
         cough medicine   308       6.11
         cough medicine   311       7.09
         cough medicine   315       4.96
         cough medicine   406       5.40
         cough medicine   407       6.46
         cough medicine   413       6.94
         cough medicine   415       5.15
         cough medicine   424       6.15
         cough medicine   426       3.46