I selected 15-20k.

It should get 3-5k from Japan alone each week on bad weeks.

Maybe 7 to 8K consoles per week?

It will be a very small boost. The Xbox One has been on sale through the local stores (via import) for months now. Here in the Netherlands they even sold it below the official price months before the actual release as you can see at the link below. Furthermore the countries it will be released in are PS territory, so based on those 2 factors I don't expect much of a boost to be honest.

http://imagizer.imageshack.us/v2/506x675q90/842/wf1j0.jpg

I live in one of the tier 2 countries and the hype as i feel it is non-existant

looooooooool now i m wondering ,why  i was afraid to post my expectations....however i m seeing you almost  all are predicting low and below 10k...:O

5K only. But how can we know the exact result? Xbox One will sell a lot better next year with or without second tier countries. There is no way we can calculate how many came from second tier countries.

I think 20k+ is a reality. This will definitely be some much needed help for the Xb1 to start gaining some ground on the Wii U.

Well the weekly sales are close to 60K and it has been available in many countries already for months now, even though no official launch had taken place. Besides these numbers are baseline numbers. The effect will be bigger in the beginning and the coming months are gonna be inflated anyways. So you can expect it to sell close to 65K from February 2015 onward (not taking account of further price cuts)

About 10k maybe? Nothing major at all.

The increase will be hard to gauge because we'll be entering a much bigger buying season. So sales would increase anyways even without the tier 2 countries. I imagine the baseline for XBO will be up 25k on average through September at least, but maybe only 7-10k from the T2 countries. I hope to see a good 25-30k boost though for XBO throughout September.