Update: applied for EORI number from revenue.
Was advised by them that EORI registration is NOT required for private individuals making one-off importations. Detailed response below from revenue. I hope this information helps others.
"Under EU Regulations Economic Operators are required to possess an EU Customs identification number (EORI number). This number along with specific details are stored on a Central Database in Brussels that can be interrogated by EU Customs Authorities.
An economic operator in EU terms is defined basically, as someone who in the course of their business interacts with EU Customs Authorities on a regular basis. In Ireland, when we allocate an EORI to an economic operator, we base it, in the majority of cases, on the same characters as a traders VAT number. This decision was taken, in part, after consultation with Irish Traders. Before we proceed with processing your application can you please clarify the following:
1. If you are registered for VAT.
2. By requesting an EORI number you are giving an indication that you intend importing into the EU (or exporting out of it) on a regular basis for business purposes. Can you confirm this.
3. In general, we do not register for EORI private individuals who intend undertaking an importation into or an exportation out of the EU on a once off basis. Can you confirm if the proposed Customs transaction you intend carrying out is a once off one and is for private (not business) purposes only."