(1 ) Until a contract is concluded an offer may be revoked if the revocation
reaches the offeree before he has dispatched an acceptance.
(2) However, an offer cannot be revoked:
- if it indicates, whether by stating a fixed time for
acceptance or otherwise, that its irrevocable; or
- if it was reasonable for the offeree to rely on the offer as being
irrevocable and the offeree has acted in reliance on the offer.