You can get a new LG 360 camera for free in a joint promotion by T-Mobile and LG. If you order the new LG G5 camera before April 5, you will get the LG 360 camera for free (while supplies last).
LG 360 Price and Availability
T-Mobile's promo also revealed that the LG 360 has a "$200 value" which suggests that it will have a $200 MSRP. If so, that would make it the most affordable 360 camera at the moment.
T-Mobile also said that the camera would come 6 weeks from being redeemed. The redemption period for the offer is 4/1/16 to 5/15/16, which implies that the LG 360 will be released in the first week of May, or possibly earlier.