nah, that's about right for current prices around here.
i just pulled a complete OD box and it was a hair under $400 so if you add in a shifter and linkage you'd be clicking right at 5
but pickin's is slim at the yard and it's more about luck on those than anything else. the chances of finding a standard 833 are darn near nonexistent. swap and classified prices are astronomical, as per usual.