My local machine shop charges here in Kansas City...
Bore $25 per cyl
Hone $8 per cyl
But you want new pistons so they are going to have to press the wrist pin out
$7 each rod
They will likely charge you labor to file fit your new rings too.
If you bring the shortblock they will likely charge you to disassemble and reassemble the rotating assembly as well.
They will charge you to rebuild the rods as well (something like $7 a rod if IRC), which is a great time to swap the OEM rod bolts with ARP bolts.
A long block for $1,300 sounds pretty cheap. You get what you pay for, and pay for what you get. Is this for a daily driver or performance?
If performance and installing new pistons, you really ought to balance the rotating assembly, $225.