Here are some prices from a recent order or price quote. I do see that crosman sends an email now that gives name, price, and quantity, but not the part number. Sorry for the formating, copy and paste from spreadsheet.
Part Name Part Number Unit Cost
Backpacker stock pin 1389A006 1.15
gaskets TP 130-036 1.15
Sleave, transfer 1763-014 1.75
gauge adapter 1761A017 8.05
Barrel .177 20" 1763-017 21.83
Oring 1.5mm X 4mm 1763-058 1.15
barrel shroud 1763-005 20.82
shroud mount 1763-013 6.3
O-ring #2-016 BUNA N 397-036 1.15
O-ring 190B-008 2.12
Barrel Band 2563-008 12
BB set screws 1763-023 1.15
BB o-ring 2563-061 1.15
Challenger Adj CH2009-011 ADJ_KNOB 7.38
Hammer Pin 2100A011 1.15
Pin, acetal CH2009-023 1.15
Pressure gauge 1763-033 13.75
Tray, Breech, .177 Pellet 1700-021 17.85
Bolt Assy .177 cal 1700-102 22.25
Bolt o-ring 397-062 1.15
Assy, Bolt, .22 cal 2220-102 18.24
stud, bolt 1700-018 5.52
Breech 2220-004 44.25
O-ring 3/8 x 1/2 190B-008 2.12
Mount, Shroud 2220-011 8.5
Set Screw, 6-32x.125 CUP HEX HD 88-089 1.15
Plate, bolt indexing 1700-019 4.9
Screw, 3-48X.188 PPH 1700-020 1.15