Q.Who is an 'unpaid seller'? State the rights available to an unpaid seller against the goods.

A seller who has done his part of the bargain but has not been paid is given special protections that act directly against the goods themselves, not just a personal claim against the buyer. …

An unpaid seller is a seller who has not received the whole of the price due, or whose bill of exchange or cheque, taken as conditional payment, has been dishonoured.

Rights of an unpaid seller against the goods:

1. Right of lien — the right to retain possession of the goods and refuse to deliver them until the price is paid, so long as the seller remains in possession of the goods.
2. Right of stoppage of goods in transit — where the buyer has become insolvent and the goods, though already handed to a carrier, have not yet reached the buyer, the unpaid seller may resume possession of the goods while in transit and retain them until paid.
3. Right of resale — in specified circumstances (e.g. the goods are perishable, or the seller has given notice of intent to resell and the buyer still fails to pay within a reasonable time), an unpaid seller exercising lien or stoppage in transit may resell the goods. …

Confusing lien with stoppage in transit — lien applies only while the seller is STILL in possession of the goods, while stoppage in transit applies only AFTER the seller …