Magento 2 is a new technology stack which can withstand to
the new technology trends in web development. The use of cutting edge stack
enables the Magento 2 software even more flexible, adaptable and scalable.
Magento 2 was announced to be “stable” during late 2015.
However, it was full of bugs and incurred development cost. Then, Magento 2 has
started releasing in two channels – 2.0.x and 2.1.x and there are very less
chances of a module which was developed for 2.0.x work in 2.1.x. So, the
development companies had to put extra efforts in development and testing for
each channel and since Magento introduces many changes from version to version
the extensions need to be maintained at high cost.
The development companies constantly tries to improve their
product. But they have to pass through a long process of approval if they are
selling it on marketplace of Magento. If in between some customer purchases the
extension, the possibility of support will be there if any needed corrections
are identified after getting the extension live.
You may find Magento 2 extensions at cheap rates.