Yes - it is possible to add extra licenses (e.g. to upgrade a RS1P-NET10 to a RS1P-NET15). Our pricing is based on a 'per order' pricing system, so purchasing an extra 5 network licenses would be equivalent to purchasing an individual RS1P-NET5 license. More information about network version pricing may be found here:

http://www.readingdoctor.com.au/Network_Licensing.html

Please contact us on 1300 66 99 40 if you have further questions.