I agree with this, The seller would obviously go for the top of the list because he can get better than anyone below that, There are other things you can do to buy bitcoin for a lower price but it is not the most practical compared in buying on a p2p websites.

One of the possible scenarios I think of in buying bitcoin cheaper than a market price is to wait for someone who needs to sell their bitcoin in a rush state and in the same local place as you are. Sometimes converting bitcoin into fiat takes time and selling it lower into your local place in a rush state is a logical thing to do especially if the seller badly needed cash. This scenario happen rarely but it is possible since I have done it myself.

Yeah, I also felt like it wasn't the case with international exchanges that the prices were fixed... I mean, that's what makes Bitcoin different, isn't it? I'm pretty sure that BTC price on reputable exchanges is set exactly by buy and sell orders. You're mentioning a possibility of being scammed, and I agree it's very real. But I do think there are notable exceptions to buying Bitcoin at the market price. Namely, there've been reports from countries with very high level of governmental control where Bitcoin could only be bought or sold on a government-controlled exchange at set prices which differed 10-20% from the international market prices (still not that much and probably inaccessible to people who are not from that country). Unfortunately, I'm having troubles finding those reports, so maybe even that wasn't the case. However, I remembered now that I've spotted something like this once on my local exchanges when the price of Bitcoin went down rapidly in March, and they have not adjusted their prices:

From my observation, competitions from buyers on some peer-to-peer can be quite exploitative. The prices displayed by those I traded with last year or so, are not usually the final prices. They tend to negotiate further below once you click to trade with them. I guess the buyers sell at higher prices on exchanges with fixed price for profits or they somehow sell at higher price on thesame p2p exchange.

Lots of the peer-to-peer exchange are still centralized though. I think what people should be using more is decentralized p2p exchanges or even the non-custodial "hybrid" ones (assuming they exist)

Buying cheaper means to buy the dip. Period. Bitcoin price fluctuates quite enough to offer plenty of such opportunities.
Ah, and obviously don't play with too small amounts because then the fees matter too much.

P2P is good for privacy, but it has its risks too. But I'm not convinced it does help much on getting Bitcoin cheaper.

Still the user have to send bitcoins to your right, if you are buying in huge quantity the trader never consider the fee but if it is going to be very less amount then he will reduce the total bought amount from the required transaction fee.And I don't think anyone wants to buy or sell in huge amount with their money will go for a local market because there are lot of risks involved when you are dealing with persons.

It is true that P2P exchanges have the advantage of selling or buying Bitcoin for a cheaper price than centralized exchanges.
However, if you make transactions on P2P exchanges, you must use an escrow service, to avoid scams. Despite its apparent
promise, many people prefer to use centralized exchanges over P2P exchanges. Because usually the price difference is not too
far apart, so many people prefer which centralized exchanges has a much better security system.

If you are lucky to see cheaper Bitcoin prices in a P2P exchanges then good for you.

Sometimes, picking a legit and trusted P2P exchange will help you. Binance P2P is good base on the reviews of the people who bought on that exchange. Either way, P2P transaction doesn't mean that you will buy it at a cheaper price. Sometimes they are more expensive than the normal trade. What's good in Binance P2P too is that there is no charges on it.

If you are pertaining to a topic if there are situations on when Bitcoin's got a discount, I would think that it would not be possible since Bitcoin's value is always true and can't have any sort of computational value from it. We can always look at Bitcoin's value in a graph on where we can speculate on if the value can go higher or lower but that value is always true.

Though we can see some exchanges that might have different values for their Bitcoin but that also depends whether the fee they are going to use is equivalent if we really are saving money in buying from that exchange.

P2P is still not ideal since scammers are using it to scam people. I always wait for exchanges promo especially in new exchangers they always have a discount or an additional percentage if you buy Bitcoin.
But im not saying to do it too,just sharing how i buy bitcoin in a cheaper way.

online shops not related to crypto have two versions too because i notice that some online shops have  products that are being sold by a big company and not by individual small sellers . i prerfer to buy on the other type so that we can negotiate the price to possibly make the deal lower and save more . placing ads is not recomended because the reason you buy on this kind of marketplace is to save  . you can just post your deal for free aside from searching for your prefered price