Jeff, I see that you're subscribed to "Upload & Sell", so you're not doing anything wrong by posting items for sale. You're in the wrong place, that's all. Threads like this much be posted in the Buy & Sell forum only.
On the B&S forum, the rules forbid "price policing". But since you're in the Nikon forum, I'm going to assume you posted to ask for opinions. So here's mine: as Elton said, your price is too high. I just sold a bunch of 32GB cards that are almost twice as fast as your Extreme III's, and they went for around $50-$55 each. I'd say you're looking at $10 per card, maybe $15 if you're lucky. Of course you're entitled to offer them at any price you want, but I don't think you'll get many nibbles on the line at $25 each.
OOPS! My error. I posted something else in the B&S yesterday but obviously messed this up! Apologies all around. I had been shooting back and forth between the forums and simply missed I posted this incorrectly.
I though I'd forgotten to format my memory card when I first saw "200" on the remaining shots with a 16GB card.
thats why i have selected the option to display the ISO there instead and just shoot like in good old film times. swapping compact rolls between all shoots
So here's mine: as Elton said, your price is too high. I just sold a bunch of 32GB cards that are almost twice as fast as your Extreme III's, and they went for around $50-$55 each. I'd say you're looking at $10 per card, maybe $15 if you're lucky. Of course you're entitled to offer them at any price you want, but I don't think you'll get many nibbles on the line at $25 each.