cost to replace starter

That's really high ,wow.1000$ for a starter..

well it not as cut and dry as to unbolt the starter and done. Its the removal of all the stuff in the way in order to get it out. I believe you have to remove the intake, belt, dip stick guide, heat shields, alternator, manifold. Starters are pricey for that car to begin with. I wouldn't recommend doing it on your own unless you have some experience working on cars before. The dealer would quote you at around the same price.

Yep labor calls for around 5-6 hours, rebuilt starter around 250.00 +. Oh and 'Mitchell" per shop key shows 5.8hrs.

Not every shop uses Mitchell; most shops I'm familiar with run AllData, which is also what RepairPal uses, I believe. Here is what RepairPal estimates for this repair: Starter Replacement (5.7L V8) for your 2007 Toyota Tundra near 77095 RepairPrice Estimate: $759 to $1099 Customized for your location Estimate includes: Labor: $482-$615 Parts: $277-$484 (excludes tax & fees) Parts Included: Starter