Show price labels and article without price (ask for price)

I use two prices, "regular price" for card payments and "sale price" with included discount for cash/bank transfer.
I would like "regular price" not to be crossed out and to write "regular price" in front of the amount, as well as in front of "sale price"

Also, is it posible to add a article without price and an "ask for price" button instead of "add to cart"?

And my 3th question: if an item is sold out, I currently have a "sold out" button that does nothing, and I would like to have a "send inquiry" button so that the customer can ask if the item can be ordered.

Best regards, Mladen

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