Magento set "please enquire for price" for product

I have a magento site, and I want to set all the products prices, baskets and checkout screens to say "Please enquire for costs" instead of trying to display actual prices.

All payment is via purchase orders, so I dont need real prices on there, and people who enter a PO number (PO is the only payment option available) already know how much their purchases cost.

Is there a way 开发者_Go百科I can do this without hacking all the templates?

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I'm afraid you need to change all template occurences of price accordingly.

The only way I can think of would be a type conversion in the product models from decimal to string, but that's an absolutely no go to me.

The products price attribute is involved in many calculation/sanitizing/validation processes of the Magento core modules and just would drive Magento to go nuts^^