hey guys wanted to knw the difference between bth the motors as per banggood bth seemed to be same comparing the data sheet thrust value differed wanted to knw the differences and performance are 1806 good for 250 quad?

Both 1806 and 2204 perform same, cobra 2204 is different because it is actually 2205.
2204 has 3mm shaft(stronger) and bigger bearings, 1806 has 2mm which has higher chance of breaking or bending, but they are cheaper.
Also- 1806 has m2 screws, 2204 m3.

thanxx sir also  what do u thnk the price should be of 4xsunnysky 1806 motors
1xzmr 250 frame 
4xsimonk esc
2pair 5030 props