That's great and I totally understand you. Wouldn't you like however to have the option ? I vape 5 ml of 24 nic per day plus my wife's whatever. Do you think it makes sense to charge me the same per ml as someone who buys a sampler? How about those who ran into hardship and cannot afford it? Should they just suffer and get sick on Chinese made crap because they cannot pay premium? And lets say one vendor came with a great efficient way to make an amazing ejuice, should we dismiss him and his hard work because he sells in bulk ?(typed on my phone, please excuse any typos I'll correct later)
You're free to buy the juice you choose to buy and spend what you want to spend. I don't think anyone is specifically criticizing you for wanting to save a little bit of money. As it's been said over and over, the majority of the posts were with your expectations from cheaper vendors, more specifically expected price per ML of e-liquid and what seems to be a failure to understand the cost of doing business.
Short of buying a factory-style setup (building, machines, having outside inspections for cleanliness) and investing a large sum of money to automate bottling internally, vendors aren't going to see a large cost reduction in the cost of bottling. I know quite a few third-party bottlers that will bottle any amount any vendor comes to them with, but they charge per bottle which means the cost to produce the liquid pretty much remains the same, barring a few pennies. The pennies they save won't necessarily be passed down in the form of a discount to you though. Chances are high they'll just use those to recoup costs elsewhere in the process.
That said, if you're vaping ~35ml a week and your wife is at or around the same, DIY is going to be the cheaper route. It's up to you to decide whether or not that's where you want to go with vaping, but that is the single cheapest method but it comes with a larger upfront cost until you build your supplies up a bit.
As far as China, a number of flavors come out of China and *many* members here like them just fine. Chinese flavors are not where they used to be and most Chinese companies have labs that would blow most of the US companies out of the water simply because they are very much ahead of us in technology (after all, that's where electronic cigarettes came from in the first place - it wasn't a US design). You're chances of getting sick are about as high as they are for most US vendors.