Wondering if I missed a great shopping opportunity this morning — or even the chance to make some big bucks.

See, today was the day “those” bags made their U.S. debut at Whole Foods.

Not sure what I’m talking about?

Well, fashion designer Anya Hindmarch has created a re-usable bag for the natural/organic market, which they were to begin selling today at 8 a.m.

The bag, which proclaims “I’m Not A Plastic Bag,” is apparently THE eco-friendly accessory of the moment, fueled by the fact that it’s already been spotted on the arms of quite a few celebs and models since its international launch in London earlier this year.

The canvas bag was selling for $15, with a limit of three per person.

We had a reporter on site at the Whole Foods in White Plains, so stay tuned for more details — but I’m told there were plenty of willing shoppers on hand.

(I would have gone myself but had an interview already set up in Yorktown Heights with Steve Wright. He’s a retired police officer who has turned his attention to creating these incredible lighthouse replicas through his company, American Lawn Lights. We’ll be featuring him in the paper and on LoHud.com next week).

I enjoyed my visit into the land of lighthouses — and have now concluded that making an early-morning run to Whole Foods wasn’t something I really needed to do.

When we all begin to see these designer bags around town (and we will, since word is every last one was bought up), I know I’ll be thinking one thing: Are they carried by those who really are committed to “the cause” — or by those who simply want to be “in”?

I mean, I have bought my share of re-usable bags, for $1.99 or less, at shops ranging from Trader Joe’s to my local A&P. I use them as often as I can, but don’t pretend for a moment I’m hard-core committed.

And I have a sneaking suspicion that it’s the same for the dozens of buyers already bidding for the Hindmarch bags on eBay, where at last check they were selling for — yes, it’s true — hundreds.

Each.