As you’ve all heard over the last few days, a new Xbox 360 model has been announced at E3 2010 and demand for it has been ridiculous. According to my friend, an employee at my local Gamestop, they have gotten over a hundred calls each day since the announcement, regarding the ability to reserve the console, when the store will get their shipment in, and what time they should show up to have a chance at nabbing one. But the most question asked has been, “Will there be an upgrade promotion?” Today, a Gamestop email to store managers has been leaked, and what is believed to be price values for the upgrade promo have been discovered.

A writer for Games Are Evil took the following picture of an email his local Gamestop had received regarding official trade-in values:

According to this email, the values are as follows:

All systems as stand alone items – $100

20gb HDD – $30

60gb HDD – $35

120gb HDD – $40

250gb HDD – $50

64mb Memory Card – $10

256mb Memory Card – $14

512mb Memory Card – $18

Wireless Adapter (original) – $40

Wireless N Adapter – $50

Wired Controller – $20

Wireless Controller – $25

It’s worth noting that these are promotional prices only, and not the new permanent values. You will only take advantage of these increased trade-ins if you are trading towards the new console.