my ribble r872 was fine out of the box; i've done several hundred miles on it and the only issue of note is that it once threw the chain off onto the bottom bracket, but i suspect a bit of ham-fisted fumbling for a gear on my part was as much to blame as anything else.
i did a club run on it the day i got it, and everyone, me included, was expecting to have to get a multitool out for it at some point.
i've also had a £250 road bike from
halfords that came perfectly set up (although the guy that did it soon left to work at a proper bike shop), so maybe i'm just lucky.
expecting all to be perfect right out of the box, and then blaming the retailer/builder, is a bit unfair imho. it's the same with many things, such as guitars; you just need to be prepared to do a bit of fine tuning to get it completely ship-shape.
i expect there are a number of people who have just bought ribble bikes on price alone, who would have been better going to their lbs and getting advice. i went for a ribble as i wanted an exact set up, but knowing that delivery would not be instant, and that i'd expect to do a bit of fine tuning etc post-purchase.
perhaps it's best to avoid online bike purchases if you don't have the skills/tools to do a 6 week service yourself, or at least have a local shop that will happily do the work for you (and budget for that).