Smart Wireless Pager System, one set with 3 watches and 15pcs single-key button for call service A worth to buy? Thanks for it if those of you who have purchased Smart Wireless Pager System, one set with 3 watches and 15pcs single-key button for call service A could share about what you think of the product. I would love any extra info, as it is quite pricey as $387.00 and I just want to know it is good before paying for it.