I haven't bought a Remington rifle in 3-4 years except to use as a donor. When I quote a price for a custom rifle
on a Remington action I always include the cost of truing the receiver face and lapping the locking lugs, with the warning that it may need more work than that. On newer guns, I also include an aftermarket trigger to replace the crappy factory trigger. I have seen rifles with rust in the joint on both sides of the recoil lug. Two rifles had been belt sanded on the face of the receiver before they were blued; One took .0055" to clean up the gouges and crooked face, the other one only took .004" to clean up. One had a huge burr between the receiver face and recoil lug ??? I didn't record how much it took to clean up. I take pictures and tell people I have "dirty pictures". The bottom lug on one long action had never touched the locking shoulder in the receiver. Many have less than 20% contact and most of them are uneven.
In spite of all this, I like to build on Remington actions. Cleaned up, they make fine rifles, capable of phenomenal accuracy.
My point? Unless a customer has a donor action; at todays prices, instead of $500-600 for a true receiver that I furnish, they're looking at $700-900 with a new trigger. That's in the range for a custom action, and stops some of the folks that I really like to do work for.