product_pricelist_prices/views/product_template.xml

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

        <record id="product_template_only_form_view" model="ir.ui.view">
            <field name="name">ProductTemplateOnlyFormView</field>
            <field name="model">product.template</field>
            <field name="inherit_id" ref="product.product_template_only_form_view"/>
            <field name="arch" type="xml">
                <field name="description" position="before">
                    <group>
                        <group string="Precios de Venta">
                            <field name="pricelists" nolabel="1" colspan="2" context="{'product_template_id': active_id}">
                                <tree string="Sale Prices" editable="bottom" create="false" delete="false" colors="red:product_price_manual">
                                    <field name="name" readonly="1"/>
                                    <field name="product_price_manual" invisible="1"/>
                                    <field name="product_price" string="Precio"/>
                                    <button  type="object" icon="STOCK_CLOSE"
                                             name="remove_price_manual"
                                    />
                                </tree>
                            </field>
                        </group>
                        <group string="Precios de Compra">
                            <field name="purchase_pricelists" nolabel="1" colspan="2" context="{'product_template_id': active_id}">
                                <tree string="Purchase Prices" editable="bottom" create="false" delete="false" colors="red:product_price_manual">
                                    <field name="name" readonly="1"/>
                                    <field name="product_price_manual" invisible="1"/>
                                    <field name="product_price" string="Precio"/>
                                    <button  type="object" icon="STOCK_CLOSE"
                                             name="remove_price_manual"
                                    />
                                </tree>
                            </field>
                        </group>    
                    </group>
                </field>
            </field>
        </record>
        
    </data>
</openerp>