Yes, on a fixed-price item where the store has turned offers on. You name a price, the store answers, and if they accept you check out at the agreed figure.
Never in an auction. There the price is the room's, and a seller cutting a side deal would be cheating the people bidding.
How an offer works
You offer below the asking price. It has to be a real offer — at least 10% of what they are asking. Below that it is not considered.
One live offer per item. You cannot stack three on the same thing.
The store answers within 24 hours, with one of three things: accept, decline, or a single counter-offer. A counter gives you the same time again to decide.
If it is accepted, the item is held for you — for a few hours, and the window shortens once you open it, in the same shape as winning an auction.
The offer never takes money. Accepting opens the ordinary checkout at the agreed price.
The part that makes it safe to try
If you do not pay, nothing is held against you. The item simply goes back on sale. No strike, no mark on your account — unlike an unpaid auction win, which is a promise broken. What is a strike?
That is a deliberate difference. An auction bid is a commitment made in public; an offer is a question.
If you are declined
You can try again on the same item after 24 hours, and there is a cap of three offers a week on one item. So persistence is allowed and pestering is not.
A declined offer is information, though. A store that said no at 70% is unlikely to say yes at 72%.
What makes an offer get accepted
Several items at once. The strongest move available. It saves the store postage and clears stock.
Something that has been sitting. A store looking at an item for the third month is more receptive than one that listed it yesterday.
A reason. A flaw you noticed, a bundle you are building. "Best price?" is the message least likely to work, because it asks the seller to bid against themselves.
A number you would actually pay. An offer at the 10% floor is allowed and is mostly ignored.
The other direction
A store can also send you a private offer, usually after an enquiry — a listing only you can buy, expiring after 7 days. That is the route for something not publicly listed, or a price agreed in conversation. Can I ask a seller to find me something?
What never to do
Do not offer to pay outside Metzee. It removes every protection for both of you and is against the rules. Is Metzee safe to buy from?
Do not haggle after winning an auction. A bid is a promise to buy at that price. Is a bid legally binding?
For sellers
Offers are per item, so turn them on where you have room and leave them off where you do not. A counter is often better than a decline — it keeps a real buyer in the conversation and costs nothing.
More: auction versus fixed price, how bidding works, can I ask a seller to find me something.