You bought an item.
Did you pay?
If you did not, did the seller open an Unpaid Item Dispute?
He can do this after 48 hours.
If you lose a Dispute you cannot leave feedback.
The seller cancelled the purchase.
Your money was returned??
When a transaction is cancelled the payment is automatically refunded in full.
The seller can then relist the item BUT
depending on the reason for the cancellation, he may have received a Defect on his account.
Defects can lead to higher fees, restrictions on listings, and closed accounts.
Buyers can leave feedback on cancelled transactions.
The seller relisted the item at a higher price.
Hmm-- if he cancelled as Out Of Stock, then got more stock in, the new product might have cost him more.
Or he used Auction and did not get the price he wanted, which often happens with new sellers.
Neither is appropriate.
You cannot leave feedback.
If the transaction was cancelled by the seller, you can leave feedback for up to 60 days.
If you lost a UID, you cannot leave feedback.
Could you explain what actually happened?