I included numbers for 8 GB->16 GB in my last post (and those are not "wrong numbers for this conversation"),
going so far as to provide screenshots demonstrating Dell's upcharge to go from 8 GB to 16 GB is $100. Yet nowhere in your response do you acknowledge this. Ignoring this information won't make it go away.
What's your source for the $150 and $250?
In my experience, anytime Dell charges more than $100 for that upgrade, it's because upgrading the RAM requires you to upgrade other things (which Apple also does in some cases), so the cost isn't for the RAM upgrade by itself. And you need to look at just the RAM upgrade alone (since that's all you're getting for the $200 you pay Apple to go from 8 GB to 16 GB) to do a fair comparison.
Plus Dell is on the high side. Here's Lenovo (the world's largest manufacturer of laptops). They offer slotted RAM in their laptops, so they're user-gradeable, and they charge
$30 (!) to upgrade from 8 GB to 16 GB:
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And here's HP. They don't specify the type of memory here, but charge $60 for the upgrade. So Apple is charging multiples more than most other manufacturers for memory upgrades. Those are just the facts.
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