mrp_pricecost/mrp_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>

        <!--
          Bill of Materials Changes
        -->

        <record id="mrp_bom_form_view_inherit_mrp_costprice" model="ir.ui.view">
            <field name="name">mrp.bom.form.inherit.mrp.costprice</field>
            <field name="model">mrp.bom</field>
            <field name="inherit_id" ref="mrp.mrp_bom_form_view"/>
            <field name="arch" type="xml">
            <data>
                <xpath expr="//field[@name='bom_line_ids']" position="after">
                    <label for="auto_update_costprice" string="Actualizar automáticamente el precio de costo del producto"/>
                    <div>
                        <field name="auto_update_costprice"/>
                    </div>
                    <label for="bom_cost_price" string="BOM Precio Costo"/>
                    <div>
                        <field name="bom_cost_price"/>
                    </div>
                    <label for="auto_update_listprice" string="Actualizar automáticamente el precio de venta del producto"/>
                    <div>
                        <field name="auto_update_listprice"/>
                    </div>
                    <label for="bom_base_price" string="BOM Precio Venta"/>
                    <div>
                        <field name="bom_base_price"/> * <field name="list_price_factor"/> = <field name="bom_list_price"/>
                    </div>

                </xpath>
                <xpath expr="//page[@string='Components']/field[@name='bom_line_ids']/tree[@string='Components']/field[@name='product_rounding']" position="before">
                    <field name="product_list_price" string="Prec. Venta"/>
                    <field name="product_standard_price" string="Prec. Costo"/>
                </xpath>
            </data>
        </field>
    </record>

    </data>
</openerp>