Mine was considerably less with leaves and I have an ARB front locker, diff armor, and a beefed pitman arm. That ride is nicer with the coilovers though. My rear axle was already geared with 5.14's when I had the IFS under it.

Custom spring hanger: $100
Custom shackles: $50
Rough Country 8044 springs (ebay) $190
Waggy D44 from a yard $235
All new steering links - Krage Motorsports - $200ish
Piece of tube to lengthing new waggy draglink; $1
Customized / gusseted pitman arm (I splurged here) $125
New Warn Premiums, 4 balljoints, Spicer 760X Ujoints: $110 from a guy on Pirate
2 cans of flat black spraypaint: $5
2 Ford F250 shock towers: $27
Brake lines and fittings: $70
Custom Driveshaft: $200
Ubolts and ubolt skids (things of beauty): $75
Misc bolts, hardware: $40
ARB Locker (used but reconditioned with new seals) $400
Precision 5.13 gears and install kit: $275
Rancho 5116 shocks: free (they were my old rear shocks)
Warn diff Skid: $60
Locker/gear install: $175
New Wheel bearings and seals: $60
Resurface Rotors: $15
Remanufactured Calipers: $22
New brake pads: $18
Misc grease, parts cleaner, penetrating oil, etc.: $15
New set of lugnuts $10

Total $2478

I'm not counting tires and wheels because I used the same 32's I had for a while before stepping up to 33's. Also, I already had a set of BDS rear springs and some crazy 7" shackles out back for height there (it sat tail high with IFS, now it sits a little nose high).

Add the rear gears and springs that were already on the truck and I'd still be in the neighborhood of $3500.