How to maintain different price for different grades

Dear sd experts

plz let me know one thing.. i have one material but we have divided 4 grades like AA,BB,CC,DD

now here material is same sales org , distribution channel is also same

so i want to maintain different price for all like 500,400,300,200

so is it possible in OMWC T.code

i know variant configuration is helpful but that concept is different ,, i have checked this link http://scn.sap.com/message/14124162#14124162

but this is differnt

so plz experts any comment on this ... thanks a lot