Hello,
RSA (who, I think now own 123.ie) appear to be offering cheaper quotes to potential new customers, than to their existing customers on renewal, for the same cover.
People getting renewal quotes from 123.ie (for example) are getting higher quotes, than say a possible new customer looking for a quote through the likes of AA Ireland for the same cover, from RSA. I've seen this proven and from reading comments on the internet, think many others have had the same experience.
If you press them a little on their quote, they will drop the price. It costs them less in real terms, to offer you a more attractive quote, to include protecting the NCB, so I'd be inclined to go this route if it were me...
One thing for sure, everyone should be shopping around and negotiating hard these days, because money is scarce and this is unlikely to change, anytime soon.