As you have probably read before in these articles, the total cost depends on what you actually need.
To give you an idea about how cheap the ZigBee Modules are I can say that a motion sensor from this line of products costs 30 dollars.
For a complete network of ZigBee Modules you will need to inquire to us a list of the needed modules and other accessories that you need or simple do the math yourself.
The entire list of products and Modules is available online and they also have the prices.
I have researched this and some people are actually afraid of purchasing products that are too cheap because they think these products will lack in quality.
Well, you need to get informed because the modules by Zigbee are very reliable and very well made in order to provide with the best reliability possible.
The best thing is that you can purchase a main module and some of the ZigBee Modules you can afford now, have a fully functional network and come back to buy the rest of the ZigBee Modules you need when you have the rest of the money.
If the network you need is larger and costs more money, you can also consider payments.
There are as many possibilities in which you can pay for your ZigBee Modules as there are ways to use them.
ZigBee Modules also come with a full warranty, so you are covered against any kind of problems as long as you use the modules appropriately and if they are not damaged by you.
The Modules are also approved by many authorities in t respective market segment, so you can rest assured that the modules are not faulty because of the low price.
The Modules are well engineered and manufactured using the best possible materials.