I don't know if you're developer but one way to do it is to create a new module which depends of product module, inherit concerned views, and change groups attribute of price field with anything like that :

<xpath expr="/form/field[@name='price']" position="attributes">
    <attribute name="groups">base.group_sale_manager</attribute>
</xpath>

You can also create your own security group for example :

<record id="base.group_price_manager" model="res.groups">
    <field name="name">Price / Manager</field>
</record>

And you can manage Create/Read/Update/Delete rights for a group for a data type with ir.model.access.csv file.