Here is a direct breakdown of your options regarding getting KPG-D3 for free or at low cost.
The Kenwood KPGD3 is a popular portable digital radio, and here are some free resources that might be helpful: kenwood kpgd3 free
The is the official Customer Programming Software (CPS) used to configure and manage the NX-3000 series of NEXEDGE/DMR digital two-way radios. Here is a direct breakdown of your options
KPG-D3 offers a modern interface for managing the complex features of Kenwood NXDN and DMR radios. KPG-D3N - RadioReference.com Forums and community support for Kenwood radios
: Online forums like Reddit's r/hamradio, r/Kenwood, or ham radio forums often have discussions, Q&A sessions, and community support for Kenwood radios, including the KPGD3.