It would be really simple. After the preorder, you see that there are, say, 65% 128GB and 35% 64GB orders and assemble two batches. When first assembling the units, you just put in the appropriate size module.
It would serve as market research. Let your customers tell you what they want. There's a good chance it would make this laptop even more popular.
As it is, it's annoying: Instead of +$20 for +64GB it's +$55 and you end up with a spare part you don't need. The value proposition is less than half as good.
What people want out of the PBP is not necessarily a fixed $200 price point, it's the value for money.
It would serve as market research. Let your customers tell you what they want. There's a good chance it would make this laptop even more popular.
As it is, it's annoying: Instead of +$20 for +64GB it's +$55 and you end up with a spare part you don't need. The value proposition is less than half as good.
What people want out of the PBP is not necessarily a fixed $200 price point, it's the value for money.