CBS/Paramount are releasing the first five seasons of NCIS on Blu-ray in Germany (as an Amazon.de Exclusive) on January 18th, 2018. This is listed as a 29-disc set, and somehow, they are selling it at only €99,99. However, if you live in the USA, you don't pay EU VAT (Value Added Tax), so the price drops to a fantastic €84,03, and it's just €3,00 for shipping, which is a grand total of €87,03 (currently $102) shipped. Based on previous Paramount Blu-ray TV releases this should have at least English and German audio and subtitles, and it is likely to be region free, even though Amazon.de currently claims otherwise.
It will be interesting to see if these are released in the States, considering that there are several CBS/Paramount/Universal series that are only released internationally. If I had to guess, based on what has happened with Season 12, and with shows like the Hawaii Five-O remake, I would say don't bother waiting and buy this German release, especially given the cheap price.