Yup, A7000 more expensive than K3 Note cause it is Malaysia set. Cheapest is RM565 Malaysia set. Standard price is rm625. My friend bought 1pc too. It is row rom also. Same like K3 Note row rom. Features almost same.
And i try A7000 back battery cover on my K3 Note....it fit. And i straight order 1pc black back original battery cover . I got all 3 colors  

Yes if u have 121 rom but couldn't find it...
Can find 112 only then need to OTA to 121...

i've got a problem with my niece K3. Once it goes into sleep, its totally switched off. Have to switch it back on.

And charging is a real pain. At times, it does charge but the percentage increased really slow. few times it was charged from 12mn to 6am it only increases by 10 percent. And at times, it doesn't even increased.

any idea on what is the problems? Is it battery, charger?

I transform my K3 Note to A7000 PLUS 

A7000-a_PLUS_S141_150902_ROW (Flash with SP Flash Tool)： https://mega.nz/#!iQFFEKQC!kz1tmBxs...Rx9f2HPz7wQQPAQ

On the contrary that many think A7000 PLUS and K3 Note is identical, the radios are actually different. Therefore if you flash this firmware onto K3 Note, you also need to flash a suitable Baseband or else you wont get mobile network. (No need for A7000 PLUS)

Baseband_S121_150813_ROW (Proven baseband with K3 Note, flash with TWRP Recovery):    http://www.mediafire.com/download/cuiagc7z..._150813_ROW.zip

Key in ####682# to change region (MY马来西亚）when done.

Enjoy!

by the way, this is a battery saver ROM (relative to K50a40 ROM), I am impressed.