Lenovo Yoga Tablets - 8" and 10"

[mtbvfr]

Hello Everybody,

http://shop.lenovo.com/us/en/tablets/ideatab/yoga/yoga-8

http://shop.lenovo.com/us/en/tablets/ideatab/yoga/yoga-10

How much extra would it cost for these tablets to have 2GB of OS Memory and a 1920 x 1200 screen?

How much extra, again, for it to have a stylus interface also?

Thanks, MTB.