The whole TETRA discussion many pages back got me really excited. For the 1K price tag, if TETRA was included even as a separate key unlock purchase, I would consider the 150.
Originally, when the SDS series were introduced, there was no need for TETRA and dPMR, outside of the EU and Australia, and even then, TETRA wasn't part of the plan. Now, with several TETRA systems in use, it's become desirable. Still no official word about its implementation, but the matter of dPMR is different: the code is in the firmware, as it's already available in overseas models of the SDS series, but the licensing hasn't been approved yet for North American models, yet, even though thanks to the flood of cheap Chinese radios, and tourists from Europe bringing in their radios, dPMR can be heard here, especially by some hams. It's because of this, that I believe there's a good enough reason to work on licensing the dPMR keys in the US & Canada, now.
Whether either or both get implemented, remains to be seen.