Not sure I agree. The example linked to is for a profitable business selling a WP thingy direct to users. Making $10,200 profit per month. It was sold for $90k

Not sure I agree. The example linked to is for a profitable business selling a WP thingy direct to users. Making $10,200 profit per month. It was sold for $90k which seems a low price given that profitability. There's definitely lots of spammy rubbish on flippa, but just set the filters and you'll find the profitable decent businesses for sale.