I appreciate this topic as I'm always on the lookout for a good value course. This is the sort of thread I search for when traveling.
That being said it's weird to say value needs to be defined as the highest price a course charges. Someone like myself searching for value is going to look for the time that provides the best price while still delivering good golf (twilight, shoulder season...). Lots of courses are going dynamic prices which to me also makes sense.
Last, for me, value usually has to do with a comparison to alternatives. A course in London at 100 pounds might be good value while it won't be in a rural place.
All that said here's some courses I've found to provide good value (I'm listing the value price - ie low price for general public).
Rustic Canyon - $39 weekday twilight (No idea how that is still possible)
Wild Horse - $65 weekday (For me personally I think this is probably the best value at $32.50 for military)
Four Mile Ranch - Website says $50 weekday with cart. I paid $42 to walk on weekends for the last couple years.
Common Ground - $59 at twilight.
Pacific Grove - $45 at twilight on a weekday (makes the list based on alternatives)
Kaneohe Klipper - $30 for a civilian at twilight (again for Hawaii and ocean views it's tough to beat)
Pretty much any course in the UK/Ireland on the coast that's under 50 pounds. I've got a trip to Wales planned where I'll play North Wales, Conwy, Abersoch, Nefyn, Pwllheili, Porthmadog and Tenby. The most expensive round of that group is 55 pounds.