By Hadas Kuznits

PHILADELPHIA (CBS) — Starbucks, the coffee chain, today rolled out reusable cups.

The plastic cups with the Starbucks logo cost a dollar, but every time you bring them back you get ten cents off your purchase.   (Starbucks also gives customers ten cents off when they bring in their own cup or mug.)

What’s the reaction to the Starbucks cup from customers at the Starbucks at 3rd and Arch Streets in Old City?

This customer likes the idea:

“You know, like Whole Foods has bags that you can reuse again, and they give ten cents back.”

But would he remember to bring his cup back?

“Ahh, I think that’s the tough part!  You know, because I always leave my (grocery) bag in the trunk and I realize, hey, I have to go back and get my bag.”

This woman also liked the idea:  “Sure, why not.  I mean, I think it would definitely be worth it.”

So did this man:   “I think it’s a great idea.  I wish I came to Starbucks more often.  But yeah, for a dollar.”

“My husband goes to Starbucks like every day,” said another woman, “so it would be good if he could reuse it.  (It would) help the environment, I think.”

Starbucks acknowledges that it may take customers a while to warm up to the idea of buying a reusable cup.  As of midday, a store spokesperson said they had sold one or two.