I bought a 1UZ from Imran 3 years ago and my friend later bought one from Qayyum, both for about 100k complete with ECU, AFM, igniters, wiring harness etc. Maybe they stay away from these engines now because demand is very limited but Usman and his dad at Ghani godam have a huge stash of 1UZFEs, both early and late model with VVTi. With or without transmission, the price is about the same. They still go for about 90-100k. I'm guessing probably cheaper in Peshawar.
300k is an astronomical price for a 1UZ, regardless of what the package includes. That's more like 2UZ territory.