The complete Megpoid V3 package costs 25000 yen for Tiny Vocaloid3 and 29800 for Starter Pack. This includes Power, Adult, Whisper, and Sweet.
You can also buy each voicebank separately. For example, Power voicebank costs 10800yen for Tiny Vocaloid3 and 16800yen for Starter Pack. Similar for Adult, Whisper and Sweet.
Note that 'Native' voicebank is not included in the complete package. Native costs the same as each of the voicebanks above.
All the products except Starter Pack have download version which is less expensive. The download version of each voicebank costs 20 percent less; and for the complete package, 12 percent less.
Special discount is available for the registered users of the products of Internet Co.