Is a static post auction on Instagram or Facebook legally an auction under the Sale of Goods Act?

Why the static post format is an auction within SGA §64

Section 64 of the Sale of Goods Act 1930 establishes the rules 'in the case of a sale by auction.' The section does not define what an 'auction' is — it describes the rules that apply when one occurs. The defining characteristics of an auction in law are: (a) goods are put up for competitive bidding; (b) multiple persons are invited to bid; and (c) the seller announces a winner. A static post auction satisfies all three. The note is put up competitively — multiple commenters bid. The post is open to all followers — multiple persons are invited. The seller announces the winner after the end time.

IT Act Section 10A confirms that electronic offers and acceptances have the same legal validity as physical ones. A bid placed as a comment on a static post is an electronic proposal within ICA Section 2(a). The seller's 'congratulations to [name] at ₹X' comment after the end time is an electronic acceptance within ICA Section 2(b) — the completion announcement within the meaning of SGA §64(b)'s 'customary manner.'

The key legal difference from Facebook Live — the evidence advantage

A static post auction has a significant evidence advantage over a Facebook Live auction. The post itself — photograph, caption with all terms, and the complete comment thread — is permanently stored on the platform. Every bid is timestamped. Every comment appears in sequence. The seller does not need to actively record anything: the platform has already created the complete auction record. Unlike a Facebook Live video which requires active downloading to preserve, a static post with its comment thread persists until the poster deletes it.

This evidence quality closely resembles a WhatsApp group auction — persistent, timestamped text — but with the added advantage of the caption, which serves as the publicly visible auction terms. Any person who saw the post can verify the stated terms. There is no dispute about whether terms were stated: they are in the caption, permanently attached to the post.

What about SGA §64(b) — when does the 'hammer' fall?

SGA Section 64(b) says the sale is complete 'when the auctioneer announces its completion by the fall of the hammer or in any other customary manner.' In a static post auction, there is no live auctioneer and no hammer. The customary manner of completion is the seller posting the winner announcement in the comments after the stated end time — 'Auction closed. Winner: [name] at ₹X. Please DM me for payment details.' This comment is the equivalent of the hammer fall. The contract is formed at this moment.

An important nuance: the passing of the end time alone does NOT form the contract. The end time is a deadline for bids — it tells bidders when bidding closes. It is not itself an acceptance (as established in Q237 for WhatsApp auctions). The seller still must announce the winner. If the end time passes and the seller posts nothing, no contract is formed — bidders may retract their bids, and the seller must either announce a winner, withdraw the lot, or extend the auction.

Laws & authorities referenced in this chapter

Sale of Goods Act 1930 — §64(b) (sale complete on customary announcement; end time ≠ completion; winner announcement = completion)

IT Act 2000 — §10A (electronic bid as comment = valid proposal; seller's comment = valid acceptance)

Indian Contract Act 1872 — §2(a) (comment bid = proposal), §2(b) (seller's winner announcement = acceptance)