ProAudioStar has open box sE Electronics RF SPACE Portable Acoustic Treatment Reflection Filters on sale for $179. These top-rated portable acoustic filters normally sell for $299. These are a quick fix for untreated recording rooms with poor acoustics/noise (obviously, treating the room would still be the best option, but not everyone has the wherewithal to do so) and are top-of-the-line when it comes to portable acoustic filters. I've been monitoring these for awhile and bought two (one to be used in front with the mics and one to be placed directly behind me when recording).
Deal link: http://www.proaudiostar.com/featu...ilter.html
Here's a review by SoundonSound:
Discussions by actual owners on Gearslutz: