To shout the benefits of shopping around.....
Looking at a particular table and 6 chairs for a new apartment. €2300 in shop in Sandyford. €1700, and free delivery to Dublin, from shop in Ballina in Mayo.
My new trick for avoiding roi then (new because of step 4).
1. Find product you like in any shop in Dublin.
2. Price from them, and bargain down as much as possible.
3. Get details from them.
4. Call/e-mail/fax manufacturer (or distributor), and ask for list of all shops selling product in Ireland.
5. Ring random ones around the country and see if they will do you a better price.
For my new apartment, this has now worked on tables and chairs above (save €600), a bed (save €125), and wooden floors (save €450).