This is the reply I've just had from Hattons.
I think Hattons are taking the chance that some packages will get stopped & others will get through.
So basically its totally hit & miss
Thank you for your email.
As we have VAT registration for the republic of Ireland, Vat is paid at the time of purchase with us and after that, no other charges should occur. With the new government guidelines in place Republic of Ireland fall under DDP (delivered duties paid). If any further charges should occur with this order please do get back in touch with us and we will look into this for you.
I hope this helps. If there is anything else that I can help you with please do not hesitate to get back in touch.