[Eee Pad Transformer Accessories] Gbcue:
Currently Unknown fitment of Transformer Prime (if it's the same size, most of the cases will fit, unknown on the ports for the sleeves)

The official sleeve: http://amzn.to/koYdNl

Asus Black Leather Sleeve (made for Eee in general) Black, Pink, or White: http://amzn.to/iJzFvp

Asus TF101CASE: http://www.jr.com/asus/pe/ASU_TF101CASEBK/

First link is the thread that says it fits, second link is to buy.

Folio-Styles that fit tablet alone (confirmed):

FolioGuard - Questionable docking w/o removing sleeve: Buy: AliExpress or ElectronicCrap

rooCASE Multi-Angle Folio: Buy: Black, Pink, Red

rooCASE Multi-Angle Leather Folio Case Cover: Buy: Black, Pink, Red

TuffLuv: Buy: http://tuff-luv.com/e-readers/asus-transformer-cases/transformer-eee-pad.html

CaseCrown Bold Standby Case: Buy: http://amzn.to/pa0l9u

Asus Slim Carry Case by Aurum: Buy: http://amzn.to/nFit8f

MoKo Folding Cover Case: Buy: http://amzn.to/oFImKR

rooCASE Slim-Fit: Buy: http://amzn.to/nkVwSs

Asus Pearl White Slim Carry Case by Aurum: Buy: http://amzn.to/nyZYj8

ASUS Eee Pad Transformer TF101 Leather KeyBoard Docking Station Portfolio Stand Case: Buy: http://amzn.to/nNlrku

Cases that fit tablet alone (confirmed):

Belkin 10-Inch - 12-Inch Notebook Messenger Bag: Buy: http://amzn.to/iZupB1

Belkin 10 inch Netbook Laptop Sleeve (pic): Buy: http://amzn.to/jNtx6v

Case Logic LNEO-10: Buy: http://amzn.to/jnKqDx

CaseCrown Double Memory Foam Case: Buy: http://amzn.to/iKUfJZ

Inland ProHT EVA 10-Inch Tablet Case (tight, pic): Buy: http://amzn.to/it5akq

MYCARRYINGCASE Kindle DX Case: Buy: http://amzn.to/kOGroN

SOLO Sterling Collection CheckFast 11.6": Buy: http://amzn.to/jVXdma

SOLO Sterling Collection iPad or e-Reader or Netbook Sleeve: Buy: http://amzn.to/lUTTRe

SOLO Studio Collection iPad and e-Reader Jacket with Zipper (pics): Buy: http://amzn.to/ma2xrt

Targus A7 Slipcase: Buy: http://amzn.to/lSOUMv

Targus Zamba: Buy: http://amzn.to/krEhQQ

Cases that fit tablet+DOCK (confirmed):

AmazonBasics Netbook Bag with Handle, Fits 7- to 10-Inch Netbooks: Buy: http://amzn.to/muewLf

Case Logic PLS-9 (tight with Dock): Buy: http://amzn.to/izo51y

Case Logic VLS-110: Buy: http://amzn.to/k81wpp

Case Logic VNA-210: Buy: http://amzn.to/igtfU3

CaseCrown Faux Suede Zip Sleeve Case (pics): Buy: http://amzn.to/mlW3KS

CaseCrown Vertical Multi-Pocket Messenger Bag: Buy: http://amzn.to/kxKbRI

Everki Advance Netbook Case 10.2: Buy: http://amzn.to/kJfucX

HP Tablet Sleeve (pic): Buy: http://amzn.to/lsOpqo

Incase CL57365 Neoprene Sleeve: Buy: http://amzn.to/kxjQGI

Kensington Sling Bag: Buy: http://amzn.to/jsgIQa

Nokia Booklet 3G 10.1" Netbook Fitted CaseCrown: Buy: http://amzn.to/jTfMVl

Proporta Perfora Leather Style Netbook Case: Buy: http://amzn.to/ljpoF4

Targus A7 Neoprene Sleeve for Apple iPad: Buy: http://amzn.to/kPYuzP

Targus CityGear Netbook Case: Buy: http://amzn.to/lNnG7Y

Targus Neoprene Slipskin Peel Netbook Slip Case: Buy: http://amzn.to/iNcHba

Targus Unofficial Slipcase Designed for 10.2 Inch Netbooks (lots of room, pics): Buy: http://amzn.to/m5z8Qz

Wenger Swiss Gear Legacy 10.2-inch: Buy: http://amzn.to/jBW5lm

MacCase Premium Leather iPad / iPad2 Flight Jacket: Buy: http://amzn.to/oYFlGz

SwissGear Lunar Sleeve: Buy: http://amzn.to/p3NbCI

CaseCrown NetBook Case: Buy: http://amzn.to/pFHBhX

I will keep this thread updated as more people buy other cases! Last Updated December 1, 2011