Re: belt tensioner and timing belt chain
That's not a horrible price.
Timing belts on these aren't bad, I'd expect 3-4hr labor, and add an hr of labor for the tensioner (which there already playing with doing it)
So if there labor rate is $60/hr thats ~$200-$225
Make sure they will still warranty it if they use Your parts, some shops won't warranty that.
The belt is the cheapest part in this one, timing belts are labor intensive.
Belt tensioner being $150, is about right for full retail, part is ~$60 and 1hr of labor
'83 Ford Ranger 2.3L 4Spd, Dual Tanks, 195/60R15's, Welded Rear End TOTALLED AT 483,211 MILES