business guys need help for business assignment

[wjlfernando]

machang

i need a comparison of 3 web sites which are having e-payment facilities
( in same category, means all of them must be doing same business car selling , book selling, like same business but 3 diferent companies)

compare
* thier service (advantages and disadvatages)
* payment methods ( smart cards, pay pal like )
* privacy policy

pls help me
thanks