pricecost_security/views/product_view.xml

<?xml version="1.0"?>
<openerp>
    <data>

        <record id="product_readonly_template_only_form_view" model="ir.ui.view">
            <field name="name">pricecost_security.product.security.form</field>
            <field name="model">product.template</field>
            <field name="inherit_id" ref="fields_security.product_template_form_price_view"/>
            <field name="groups_id" eval="[(6, 0, [ref('group_restrict_pricecost_prices')])]"/>
            <field name="arch" type="xml">
                <field name="standard_price" position="attributes">
                    <attribute name="invisible">1</attribute>
                </field>
                <label for="standard_price" position="attributes">
                    <attribute name="invisible">1</attribute>
                </label>
            </field>
        </record>
        <record id="product_readonly_product_only_form_view" model="ir.ui.view">
            <field name="name">pricecost_security.product.product.form</field>
            <field name="model">product.product</field>
            <field name="inherit_id" ref="fields_security.product_form_cost_view"/>
            <field name="groups_id" eval="[(6, 0, [ref('group_restrict_pricecost_prices')])]"/>
            <field name="arch" type="xml">
                <field name="standard_price" position="attributes">
                    <attribute name="invisible">1</attribute>
                </field>
                <label for="standard_price" position="attributes">
                    <attribute name="invisible">1</attribute>
                </label>
            </field>
        </record>
    </data>
</openerp>