The right of an unpaid seller includes several remedies in case the buyer fails to pay the price of the goods. These remedies are intended to protect the seller's interest in the goods and to compensate them for any losses they may suffer due to the buyer's default.
However, there is one right that an unpaid seller does not have, and that is declaring the buyer bankrupt. This is because only a court can declare a person bankrupt, and the seller does not have the authority to do so.
On the other hand, an unpaid seller has the right to retain the possession of the goods until the buyer pays the price, stop the goods while in transit, and resell the goods to recover the price. These rights are outlined in the Sale of Goods Act, which is a legal framework that governs the sale of goods in most countries.