The process of RFQ is as following: RFQ -> Quotation maintenance (price) -> Quotation comparison
There could be multiple negotiations with the vendor, so after the first negotiation the vendor would send the quotation which user will maintain in ME49.
After this the user may have more negotiations with the vendor, where the price could be less, which the user will maintain in ME49 (Change quotation).
Now user wants that in system he/she should be able to see history of quotation prices maintained for a RFQ.
Normally SAP suggests that in system only the final negotiated price should be maintained. But in order to keep tracking of price negotiations we need such scenario.
Is there any way or is there any standard report, which will fulfill this requirement?
Well in standard SAP there is nothing like this only the final will be there but you can go on the top of the screen and see header and Item under that statistics button with general and changes you can click the changes and see the changes.
i feel you should contact your ABAP team and try to odevelop a customized report to see the changes you did in maintenance of one RFQ.