Fresh originals will cost 3,500.00 and up, however clones work just as well and will feed a 528 just fine if jetted properly. I sell them for $1,200.00 a set fresh and ready to go, see attached pic, these are built to order, not on the shelf. What's nice about them is that all original air cleaners, fuel lines, and linkage works on them because vintage small throat tops and reproduction OE Hemi side linkage are used. The bases are new Edelbrocks so all of the new jet & metering rods EB sells can be used in them. You'll likely find that using them in conjunction with other stock componants will result in one of the lowest cost combos as well.