PetSafe Guardian GPS Fence

PetSafe is the company that invented electronic dog containment with the Invisible Fence brand. The Guardian GPS brings that decades of expertise into the modern GPS fence era. At ~$370 with no monthly subscription, it's the most affordable GPS fence by a wide margin — significantly cheaper than both the Halo ($524 + $9.99/mo) and SpotOn (~$999). The AccuGuard technology delivers reliable containment, and the 48-70 hour battery life is the best in the category. The trade-offs are a 30 lb minimum weight requirement and a cap of 20 fences (still plenty for most owners), but with no ongoing fees, the 3-year cost stays at just ~$370. For dog owners who want GPS fencing without the Halo's subscription or SpotOn's upfront price, the Guardian is the sweet spot.