Re #6:
It doesn't works with jQuery 1.10 if you are using Commerce Kickstart,...

Re #6:
It doesn't works with jQuery 1.10 if you are using Commerce Kickstart, but works with vanilla Drupal with Commerce installation. The jQuery error is from a Commerce Kickstart JS library, that can't be fixed in this module.

I have used the solution as mentioned in #9. It is a lot cleaner than #18, and the JS is going to be added only once in HTML. Also it makes the blocks independent of each other.

Thanks all :) and apologies for the delay.