rebuilt or new injectors..

rebuilt are $2050
new are $3120
New Bosch : https://www.ebay.com/itm/12616316792...hoCwOgQAvD_BwE $1500

thoughts

That's probably a better question for John Kennedy, or someone who deals with them more intimately. Reman choices are probably dependent on the source, more so than just being reman'd. Also, "new" may not actually mean new, but reman's from a common source, packaged as new. It may or may not be important at all.

Heres the source:

https://dieselcare.store/collections/2006-6-6l-lbz

If it seems to good to be true: It IS.

Legit Bosch factory reman just shy of $3400

Legit Bosch factory new $3600

and how about ACDdelco injectors these run $1500 for new on Ebay.....

Good advice for buying nearly any diesel fuel injection part is to: "buy from a legit, known reliable source." The specter of being forced to do the job twice makes spending a few extra bucks worth it.