I'm using PrestaShop v 1.4.2.5 & v 1.4.9.0 for my websites.
In PrestaShop v 1.4.2.5 i can enable "show price" using tick mark in unavailable for order products.
(disabled "available for order" by removing tick mark)
But i can not do it on PrestaShop v 1.4.9.0. I can not put a tick mark for...