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Once made, an offer does not last forever. If it is not accepted, it ends without any contract arising:
1. at a prescribed time, if so stated in the offer,
2. at the end of a reasonable length of time if the offer does not state how long it will remain open,
3. by rejection of the offer by the offeree,
4. if the offeree makes a counteroffer,
5. if it is revoked (withdrawn) or modified by the offerer before the offeree accepts, or
6. by the death or insanity of the offerer or offeree.
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Does an offer last forever?
Once made, an offer may last for a definite time.
Once made, an offer may last forever.
Once made, an offer may last for a certain time.
Once made, an offer does not last forever.