The valve job price is way out of line..
Here is a tip. The 50+ year old heads are going to need guides or better yet properly installed liners. Have hard exhaust seats done at the same time. That way when the valve job is done. You get three angle valve job done for no extra cost.
The seats have to be done that way anyways.
So when you get your quote... Ask for guides/liners and hard seats+ valve job and you will get a three angle valve job without the "added" cost. All part of the work correcting the seats after the guides and seats are installed..
Some of these shops consider you "fair game" when you mention "three angle valve job".. When in reality it is an included part of a regular service guide and seat install.