Here‘s an example of the above. The forum member advertised this on here for just £125...it sold on
eBay for £370
it’s certainly a sellers market, with almost no sub £500 new road bikes available for the last month or two
I bought my 2nd road bike from a member on this forum last October. It was an upgraded carbon boardman. Great bike, fabulous price, great seller. Do not discount forum member's classifieds! You may even twist one's arm to sell something they had not considered selling.
Secondly, generally speaking, in the current climate, yes bikes are sold out but, there are a LOT of people trying to sell shag knackers for silly money but, if you keep your eyes peeled, the right bikes, in the right condition are appearing at sensible prices, so don't be forced into paying over the odds.
As an example after lockdown, I bought a 2013 Giant TCR with an Ultegra Di2 conversion, box of extras (seats/bars/tyres, spare wheels), all receipts for the build, in immaculate condition for £800. People were and still are asking circa £1500-2000 for effectively the same bike in not as nice condition..... they are still on the market......