Artists might set their work to 'Enquire Now' for a number of reasons and usually it just means that you may need to wait a little bit longer for it to arrive.
For example, they might be on holiday and unable to send their work, the work might be in an exhibition or it might simply be waiting to dry.
If you'd like to purchase a work marked as 'Enquire Now', just click the button to make an enquiry. In most cases, buying the piece isn't a problem and it can soon be yours!