Yeah...I really hate USPS tracking but they reliably do deliver to my address. At least locally here I'd probably rank the major couriers as UPS, USPS, FedEx (could be different elsewhere).
Although I have noticed USPS tracking got a bit better in the last year or so when Amazon started routing a ton more packages through them for last mile delivery. However, the last week or so I've had lagging tracking for a number of packages through them (not only this Hak5 package). Hopefully it's a case of lagging updates vs not being shipped out.
If they went out on Monday I should have it today! But I think perhaps closer to Friday is a better bet ;)