[BenSS]

You can definitely get the hardware for <$15 in bulk if you source it yourself. There's a huge variation in quality though, as with most of the China stuff. If you're willing to deal with the caveats&lock-in of the Gimbal Beacons you can get those for $5.

Feel free to hit me with beacon questions, I've got a bunch of varieties sitting on my desk right now.

[eggie5]

what are the caveats of Gimbal?

[BenSS]

Shorter range, proprietary setup/configuration process, cycle IDs (crashing some android bluetooth stacks). They really want you to pay for the backend - wouldn't be surprised if they're sold at cost.

The batteries don't last as long as advertised either, but that's pretty much been true for all of the devices I've tested.