custid	age	gender	productid	price
1	40	M	21		30
2	50	F	20		120
3	25	M	21		30
4	35	F	20		120	
5	35	M	19		70
6	43	F	19		70
7	24	F	15		160
8	32	M	16		25
9	47	F	15		160
10	21	M	20		120