Hello Khaiser,
1.- ITSM on solution manager Usage rights and aditional information:
Check that post:
http://scn.sap.com/thread/3378381
On that presentations is really clear:
About Usage RIghts
2.- ITSM, you need to contact with you account manager for htat, the price depend of the amount of elements to discover, that number of networks/location of your devices.
Check that:
https://websmp202.sap-ag.de/~sapidb/011000358700000197002011E.pdf
or contact with viktor.kalapos@sap.com, Viktor will help you.
Regards,
Luis