Update:
No sale yet (surprise). To answer an earlier query the agent is Savills. We've been asked a second time to open the house for a buyer and took some of the advice mentioned here to do a personal, (and hopefully personable) job. I think the problem is that, despite the swish website and image they have too few reps down our way - just the one guy, in fact. Haven't yet said anything to the agent about this for the reasons other posters adduce - a potential buyer is too scarce. Will write to them about introduction rate instead of full fee, though - that's good advice.
It seems all the viewers to date have come through MyHome.ie (one or two from England) so if we take it away from any agent and try to advertise ourselves do we cut off this option? (We did have it on daft.ie before looking around for an agent - no responses)