SPOT tracker price hike: Crass April Fool stunt or unwanted price rise

This morning, Saturday 1st April 2017, I got this email from SPOT LLC about my SPOT  tracers:

spotllc

SPOT trackers are frequently used by high altitude balloonists as a primary or back up tracker.

This email is either a crass April Fools joke, given the already high cost of the trackers, or an unwanted price hike. If it is an April fool then it is not as funny as Spaghetti growing on trees. If it is the latest in a series of price increases then it is definitely unwelcome. I will try and get clarification on Monday from the company itself. We will also try and get more information on what ‘service improvements’ are on offer for the extra $50 a year.