A few too many truisms above. Typical trollish bs: long on opinion, short on fact. Love the axiom that small, inexpensive lenses are always inferior to large expensive ones. Right...
I wrote typically the best lenses are more expensive, heavy and bulky. I did not write that is always the case nor that these are necessarily the most expensive, but these are typically not cheap.
Neither did I write expensive lenses are the best or that cheap ones are horrible as you can easily find overpriced mediocre lenses such as the 35mm Zeiss (unless you get a good copy) and where some cheaper ones dos allot better, just as you can find cheap lenses that dos fairly well compared to the price.
For example the sony 85mm is probably the best value for money, but the Sigma and Sony GM is still better. The Samyang also dos well if you get a good copy and for a time but doesn’t hold op for very long. This is too often a problem with cheaper lenses, these might be great if you get a good copy, but then again you might not. I have seen, heard and experienced way too many not holding up for very long. At the end of the day you get what you pay for. There is a good reason why Sony charge almost 4x for their GM, it’s not only about picture quality but also durability and longevity.
Way too many thing that you should only look at the total costs of parts (an actual useless information in its own), but that is just only a small part of what makes up the total cost of a product, companies need to pay wages, suppliers etc. if you don’t look at those aspects you won’t get a very clear picture of what the total costs is. I‘m familiar with a few companies who play with completely open cards and tell the price of every part, process etc. it give an insight into all the things that needs to be included and also the problems that you can encounter, problems that you need to cover in the final price.
If you cannot afford it too bad, buy something else. Don’t complain that it’s too expensive or buy it when the price drops. If the cheap Sony A7C end up costing $2000 then it’s the right price.