Scenario - Mark Up Price Bid on the Scheculed Price !

Hi

We have a business scenario where the client wants to float a Bid Invitation for Services which have scheduled prices which means they would mention the listed price for the Service in the Bid Invitation & the Bidders will be expected to quote relevant Mark Up Price (% Up or % Down ) from the listed price in their respective Bids.

In R/3 we can do this by the GP Bid Type RFQ.

Has anyone come across a similar scenario ?? Pls advise.

Thanks

--Vikas