Amazon has current model (with TV/Volume remotes) Roku refurbs as a deal of the day.
Streaming Stick (for 1080p, WiFi) with voice remote – $32
Streaming Stick+ (for 4K, WiFi) with voice remote – $48
Ultra (for 4K, WiFi, Ethernet, MicroSD, USB) with enhanced voice remote – $72
These are the 2017 models. The 2016 remotes were prone to failure or desyncing from the sticks, these 2017 remotes don’t have that issue.