I went through Tamiya USA's site looking for bodies and sticker sets that were on sale and I figured I would justify the time spent by sharing my findings here.
I can't 100% guarantee I didn't mess up some of the descriptions, but the item numbers and prices should be correct.
Bodies on sale:
Nitro Thunder body and wing (9334091): $10
Nissan Titan body (1825695): $19
Farm King body/cabin (1825766): $19
TamTech Gear Ferarri body (1825488): $16
Alfa Romeo MiTo (1825614): $18
Pre-painted Alfa Romeo MiTo (black) (84277): $44
Mercedes-Benz Actros 1851 Gigaspace (9335685): $17
TNX (1824064): $6
TRF201X (84368): $26
TRF201X lightweight (84374): $28
Raybrig Honda HSV-010 (9334143): $20
TRF501X (1824097): $21
Wolf WR1 (9338094): $25
Double Blaze (1825425): $12
VW Scirocco (1825685): $20
Mad Spirit (8084226): $30
Sticker sets on sale:
TA-05 VDF (9494140): $7
DN-01 Zahhak (1420478): $8
Nissan Fairlady Z (with masks) (9495531): $9
Porsche Cayenne (1420244): $9
Plasma Edge (9495523): $7
MAN TGX 26.54 R620 XLX (9495629): $11
TRF415MSXX (9494110): $10
TA-06 Pro (1420492): $4
Over Lander XB (9805956): $11
TA-05 M-Four (9494153): $7
Raybrig Honda HSV-010 (9495671): $22
TamTech Gear Ferarri (with masks) (9494106): $6
Fiat 500 (9495573): $10
Mercedes-Benz Actros 1851 Gigaspace (9495770): $10
TG10-Mk.2 (9494078): $5
Toyota 86 (with masks) (9495731): $10
Citroen Xsara WRC 2004 (9495449): $8
WILLCOM ADVAN Vemac 408R (with masks) (9495533): $23
Subaru Impreza WRX Team Arai (with masks) (9495739): $18
Mercedes-Benz AMG DTM-C Class 2008 (9495586): $14
TA-06 MS (1420634): $4
Baja King (9495402): $6
Eclipse Advan SC430 (9495518): $14
Porsche Carerra GT (1424338): $7
F104W GP (1420542): $11
Honda S800 Racing (9495615): $10
Super Fighter GR (9495657): $12
F104 ver.II Pro (1420561): $7
M05 ver.II Pro (1420673): $4
Toyota Altezza Racing (9495639): $19
TB Evolution V MS (9494122): $10
TB-04 Pro II (1428311): $4
F104 body (9495591): $6
Nissan 370Z (9495648): $8
Honda Civic R3 JAS (with masks) (9495651): $16
XV-01 Pro (1420572): $8
TamTech Gear Porsche 935 Martini (with masks) (9494108): $12
Mighty Bull (1425961): $6
BMW 318i STW (with masks) (9495700): $23
RM-01X (1424475): $5
Toyota FJ Cruiser (with masks) (9495812): $10
BMW Z4 M Coupe Racing (with masks) (9495517): $8
TRF101 (1424477): $9
F103RM (9494125): $5
TB-03 VDS (1424467): $5
Mobil 1 SC (9495493): $11
Volkswagen Golf GTI (9494137): $9
Toyota Land Cruiser 40 Pick-Up (9495814): $10
Raybrig Honda HSV-010 (with masks) (9495654): $15
TRF201 (1424459): $5
Alfa Romeo MiTo (with masks) (9495626): $13
Ferarri F430 (9495467): $7
Motul NISMO GT-R Tokachi 24 Hours Race (with masks) (9495634): $22
F104X1 (1428281): $5
Hopefully this will be useful to someone out there.