Nah, if they have them on hand they'll sell them. My bank will order whatever I want. Now, if you order them and bring them back to them to dump they won't like it.
I had my bank order me a couple hundred of them. I was selling some junk at the swapmeet a few weeks ago and I'd put five of them at a time and sell them 5 for $11. I sold quite a few. They are current issue money, if more are needed the BEP prints them.
I have doubts about a bank getting you $500 in pennies though....that's close to 300 lbs. You'd have to be a pretty good customer to get that