I really don't think that "...it will give real buyer a faster time to buy...".
We now have a situation where savvy sellers, willing to play the game, will inflate their prices just to be able to reduce it again and make the price seem more reasonable.
Savvy buyers will watch and wait for the "more reasonable" offer.
But inexperienced sellers who don't know the rules of this game, or those unwilling to play and list at a reasonable price to start with are left waiting for a sale because there is now the expectation that a reduced price offer will be sent, so buyers delay buying whether the price is reasonable or not.
Previously the seller would add "Best Offer" to their ad. if they were interested in haggling. There would be less haggling and less wasted time if everyone listed at a BIN price that they will accept straight away. Add Make An Offer if they want to haggle. Or use the "Auction" format if they are willing to gamble with the uncertainty of an un-fixed price where the result can either be higher or lower than the price they might hope for.
Everything I've listed this year, with one exception, has had watchers but I've only sold 4 items. If the watchers had any intention of of comparing prices and giving "real" buyers a race to buy reasonably priced items, I'd have sold many more as my prices were always reasonable.
I only have to look at the Sold pages of the vintage glass I sell (and sometimes buy) to see that these days most of what does sell are items that are under-valued 'bargains'. It's why ebay has a reputation for being involved in the 'Race to the bottom' with business sellers offering top quality, high-end items leaving the platform and private sellers doing the same because both are fed-up with having to accept low prices to sell anything.
