Amazon has eBags Journey 22" Spinner Carry-On for $35.99 when you apply 40% off coupon code BTJU3YXT at checkout. Standard shipping is free.
The exterior dimensions (including wheels and handles) is 22" x 14" x 9" and meets all domestic carry-on size limits.
Product video, longer description and additional reviews on ebags.com
EDIT:
Also, eBags Journey 25" Spinner is $44.99 and eBags Journey 2pc Spinner Set is $71.99 with 40% off code BTJU3YXT