$250 seems like a normal price for Apple peripherals.

If DVI connectors can be bought and therefore made for less than $5, what is stopping anyone from producing at least the ADC plug? Clamp a DVI plug to it and it’s good. It’s not like DVI cables are that complicated inside, I bet anyone could start a little online shop to solder them together and ship it. It wouldn’t look good, but it would work.