My basic reply is, they are your chips so you can handle them any way you want. With that said, I would give you an opinion if you post pic(s) of them. I may or may not be interested at all, depending on the specific chip & condition, etc.

3 suggestions:
1. If there is a range of wear, show a sample of levels of wear.

2. As an incentive to give a "best" value to you, perhaps you could allocate the best ones to the highest $ responses first? That's how one long-time chipper does it.

3. If someone wants more than one chip, offer a quantity discount for multiple purchases.

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Collectors of small-town Nevada chips are a pretty small group, so you may run out of interested parties pretty quick. It depends on the chip.

Specify if postage is included or extra.