the NX -> RX base price jump is about 22%, that theoretically puts the TX starting at around 60k, maybe more.
I sat in an RX while getting service and was very unimpressed with the materials chosen for the RX, the TX does not seem to fix that trend (cost cutting). Lexus will be given a pass from the press and consumers, but if you compare an X5, GLE, or GV80, the TX falls short. The saving grace is that it is quite a bit more spacious than these 3. It's sized in between the X5/X7, GLE/GLS, so it could potentially be the value play with lexus reliability.