I sold a site on there for about €2500, and the acquaintance who recommended it sold a site for something like €10000.

FWIW I have sold numerous properties and domains on there, in fact I have been selling on there before it span out to become Flippa when it was still part of the SitePoint Marketplace (they did the same with 99Designs). They are a highly reputable organisation - they have made SitePoint, 99Designs, Flippa etc.

For instance, there have been a couple of sites which have sold for over $1MM[1] and there have been many which have sold for a few hundred thousand[2] as well as sales in the several thousand plus range as well.

[1] https://flippa.com/2677949-planetrx-com - $1.2MM There is another which sold for $1MM there and a few around that price point as well.

[2] https://flippa.com/102961-bloggersunite-featured-blogger-net... - $450k

Other Examples (I could include loads):

Duncan Riley (Former TechCrunch Writer) sold Inquisitr for $330k there: https://flippa.com/138899-the-inqusitr-rare-opp-to-buy-15k-m...

Retweet sold for $250k there: https://flippa.com/85167-retweet-com

There are loads of other examples too!

With regards to the 'ending soon' you shouldn't use that as a guide (I think Flippa need to clarify this for signed out users/lurkers) because as soon as someone bids it adds 4 hours on the end of the listing (providing it wasn't BIN'd) to avoid sniping.

There are sites on Flippa now with bids in the several thousand plus range.

That's because most sites there are only worth <$200; they're cookie cutter templates sold on new domains over and over. That doesn't mean sites that are worth more don't sell for more. Most stuff listed on eBay is only worth a couple bucks... that doesn't mean you can't sell a $20,000 car there easily too.

I sold a site on Flippa for $90,000. Paid through escrow.com and transferred in under a work week with everyone happy.