My local store had the Roku Express + on clearance for $19. Shows up as $37.99 on Walmart.com so not sure if it is on clearance everywhere. Does show up in the Walmart app as $19 at my local store though.
The Express + is the same as the Express except it adds composite connections for older TV's. It comes with the composite cable and the HDMI cable. It supports resolutions up to 1080p.