Subject	Promo	Discount	Eprice
1	1	40	4.1
2	1	40	4.5
3	1	40	4.47
4	1	40	4.42
5	1	40	4.56
6	1	40	4.69
7	1	40	4.42
8	1	40	4.17
9	1	40	4.31
10	1	40	4.59
21	1	20	4.94
22	1	20	4.59
23	1	20	4.58
24	1	20	4.48
25	1	20	4.55
26	1	20	4.53
27	1	20	4.59
28	1	20	4.66
29	1	20	4.73
30	1	20	5.24
41	3	40	4.07
42	3	40	4.13
43	3	40	4.25
44	3	40	4.23
45	3	40	4.57
46	3	40	4.33
47	3	40	4.17
48	3	40	4.47
49	3	40	4.6
50	3	40	4.02
61	3	20	4.88
62	3	20	4.8
63	3	20	4.46
64	3	20	4.73
65	3	20	3.96
66	3	20	4.42
67	3	20	4.3
68	3	20	4.68
69	3	20	4.45
70	3	20	4.56