The most important thing is to check the legality before spending money, because depending on where you hunt the rules change quite a bit. In some places they ask for special permits or straight up don't let you use drones for hunting activities, so it's worth checking with the local authority or with the park rangers in the area where you plan to go. Some provinces are more flexible and others are stricter, and you don't want to end up with fines or have your equipment confiscated.
Now, if the legal side is clear, then yeah, it's definitely worth it. The truth is having an aerial view of the area saves you hours of walking on foot, it helps you identify tracks, animal movements and the terrain without burning energy before you even start. I've been using one for a while now to scout new camping areas and it's incredible how your strategy changes when you see everything from above.
As for budget, a decent drone for this doesn't need to be one of the most expensive. Something in the mid-range works perfect: there are options between 300 to 800 dollars that have good battery life, a camera with zoom and stability. On Mercado Libre you'll find everything from dirt cheap Chinese ones to well-known brands, but avoid the really basic ones because they run out of battery in five minutes. Ideally it should have at least 20-30 minutes of flight time and a camera with optical zoom so you can see well from a distance without losing quality.