RRP, or recommended retail price, let's you display a guide price on your site for the manufacturer's recommended pricing, typically in order to demonstrate how much cheaper than the norm your price is.

To activate this, you must first turn the RRP display on with the frontend.versions.display.showrrp config setting, then you can set a value for RRP for each version. Note that this only shows on some version types; options products do not display this for example, because the price of options products is not fixed - and providing an RRP for each permutation of options would be unnecessarily complex for what is essentially just a guide and marketing device.