This is how I would do it (It has been a bit so you may want to call ADP to confirm I didn't leave any thing out)
Create a source for the parts you want to sell at a fixed price in MSSO. Move all fixed price parts to this source.
OSSA to set source account (review with office the accounts to be used or copy another setup) this step also needs to be done in -S USA.
PMU > Field Map > (the rest I'm fuzzy on) Map by Map and change list to not update.
PM - change list to the desired sell price on each part. (To change prices in the future redo this step)
OSPC - set price code by source. Select the new source you created and set all price codes that may be used on the RO to sell at list.
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aka SBrittain - ADP - ActonCDJR
Our job is to give options. It is up to the customer to make the decision.
[This message has been edited by Stevenspeaking (edited 02-13-2013).]