> If distribution of object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place satisfies the requirement to distribute the source code, even though third parties are not compelled to copy the source along with the object code.
Similar clauses in Sec 6.
> c) Accompany the work with a written offer, valid for at least three years, to give the same user the materials specified in Subsection 6a, above, for a charge no more than the cost of performing this distribution.
Or, instead of theorycrafting reasons why it shouldn't work, you could "just" sue them and see if the judge agrees.
The hell? Over here, the price tags are a sort of public contract, to which the seller pre-commits. The seller forgot to change the tags? That's not the buyer's problem.
The other solid bait & switch is advertising a product that they don't have any of to sell, in the hope that you'll come in and buy something more expensive (or lower value) instead.
A written offer on its own would not normally be directly enforceable in many (most?) jurisdictions, for the same sort of reason that retailers can't be held to incorrectly published prices (in the UK at least, a displayed price is an “invitation to tender”, not a contract or other promise) except where other laws/regulations (anti bait&switch rules for instance), or the desire to avoid fighting in the court of public opinion, come into effect.
But in this instance, the written offer and the response to that offer are part of the wider licence that has been agreed to.