When we moving from England to Wales in 2017/18 we were in a great position as we'd already accepted an offer under an auction contract on the house we were selling. This meant that the sale was (virtually) guaranteed to proceed, although in actual fact there was zero chance of it falling through because our buyers were desperate for our very unique property that they'd previously missed out on.
We viewed a house we loved and made an asking price offer same day. The house was a probate sale and was full of crap (hoarder's house) and we said we'd buy it as seen with all the stuff so the beneficiaries didn't have the hassle of clearing it.
In addition we informed the EA we wouldn't be conducting a survey - as we hadn't for our previous three house purchases. Within a couple of weeks we'd be cash buyers as our own sale would've gone through and we assumed all this would put us in a great position.
Instead of accepting our offer, the EA told us the six beneficiaries had decided to increase the asking price, which in all fairness had seemed very low. The price went up by £40k and we again offered asking price and for viewings to stop if accepted.
They took a week (contacting all six beneficiaries, one of whom lived in mainland Europe) to come back and say the viewings would continue whilst our offer was considered. A further week later we'd heard nothing so contacted the EA who said the house was now going to sealed bids.
Having submitted our (slightly higher, about £10k more than our last) offer, we waited - only to be told after the closing date we'd been unsuccessful.
We went on to buy a different house on which we completed within 28 days (repossession) and on which we didn't have a survey either.
Some time later I checked the land registry to see what had happened with the other house. Turned out not only had it taken six months to go through...but it had sold for considerably less than our sealed bid!
From what I later gathered speaking with someone who knew the buyer, it had been sold to them because they were local whereas we weren't, so price and timescales didn't come into it. Moreover, they'd insisted on the crap being removed too.