I see Ambient has two entries for this item - one as Stratus for $30, the other as CoCoRaHS for $23. Does the lower price include an obligation to join the CoCoRaHS 'team' or is it optional?
As it is, I don't think I would have enough active memory cells to maintain my end of it but wouldn't mind having another $7 to toss in the Boltek wish jar.
TIA for any info.