I am a freelancer too.
I have one client who need to use EopnERP.
I need only those people bid here who know python, OpenERP very well.
Costing is not like mentioned here. Keep payment aside.
Mention costing through PM
Also need to customize this erp let me know how much time basic customization could take.
Eg: Indian taxation part for which people use tally.
this is not only customization there will be many.
Also any body there who can convert this from python to php so we can run it on shared server :)...
More information i will tell you from PM only.
As this is not simple or easy project. Who have worked on Open ERP will only access it easily :p .
Now about more details i will use messaging system
PS: do not think of pricing given here. please mention here you own pricing through PM and put any price here which is visible to all. I do not care of that.