First off, for those who say Americans have no sense of history, I think the shoe is here on the other foot. Ireland is no longer part of the British Empire because of a chain of events that started when a bunch of American ignoramuses fought for independence. Had that not happened, you’d (arguably) still be living in an Empire where the King was the ultimate power.
The modern concept of “freedom” arguably began when li’l Tommy Jefferson and his cronies (say, around 1776) decided that government was based on the consent of the governed. And around 1789, when that same gang (pretty much) set up a form of republican government with a written constitution that guaranteed certain freedoms (freedom of speech, of religion, of assembly, etc.)
Up till that time, other countries ensured freedoms, of course. The Spanish Government’s Inquisition guaranteed freedom from heresy, for instance. And various governments guaranteed freedom from nasty foreigners.
So, America is entitled to call itself “land of the free” in the historic sense, in the same way that Egypt calls itself the “cradle of civilization” or that Italy calls itself the “home of the Renaissance.”
Second, you seem to be equating freedom with the ability to buy things. The U.S. is a republic, and there is constant discussion about allocation of power between the states and the federal government. Those states where the legislatures have restricted the ability of residents to purchase or sell certain items… well, most governments do that. Your vaunted Irish freedoms don’t include the freedom to buy or sell heroin or other drugs, I bet. Different governments draw different lines, the question is only whether those governments are elected representatives, enacting what (presumably) is wanted by the people governed.
And finally, let’s compare prices for commodities. America might not be the land of the “free”, but compared to Ireland (and most of the rest of the world), it’s certainly the land of the inexpensive. Plus, I’ll add, lower effective tax rates than most of the rest of the world (generally, the small number of countries with tax rates lower than the U.S. are called “tax havens.”)