The current trend in very cheap ARF's now days (try building one yourself from a kit then add it all up) is indeed a double edged sword, which developed a 3rd sharp edge when you add in online buying.
We all want the big flash looking powerful model, and thanks to Chinese made mass production made ARF's fed by cheap labor markets (that we are all too aware of), quality assurance is never going to be the same as if we had built it ourselves with love and care. For them it's all about spitting out the next unit and getting paid for it, and sometimes small things that drive us the owners mad just don't matter to those living in an onsite accommodation block eating rice every night.
If you want QA, pay more for the model at the local model shop and make use of the opportunity to inspect the model fully prior to purchase yourself. If you CHOSE to buy online from unregulated countries/stores, you do so at your own risk. Expecting someone who's monthly income is odds on less than the cost of your new toy to care about your cracked cowl or imperfect finish once you've spent your money is utterly ludicrous, as it is US who enable them being as it is US who decided to save ourselves a few hundred bucks in the first place - IE we went with the 'cheaper' option off our own accord.

My own 30cc Sbach is not perfect, I have slightest little hint of white coming through the green on it's back, and the finely cut points of the black lightning bolt patten keep lifting. I ignore the very faint white bit, and use a little book binding (UV stable) tape to sort the lifting issue - and I've also replaced a lot of the rear control rods and all the horns as I didn't like them. I'm not complaining in any way about it as I got what I paid for, just as I expected i would, and it's still going to work out a lot cheaper than building it myself, and it'll look great when done.
And if anyone thinks they always get free from issue's ARF's and still thinks we are justified on moaning about every point, just ask yourself why it is that we all run CA around all the joints we can get access to on every build??