Depending on the size of your run, it's probably a lot cheaper than you think. my run is about 600 sq ft, and I installed electric fence for less than $100. The cheapest controller at Tractor Supply was $49 and will run 2 miles of wire (single strand). I bought about twice as much wire as I actually used, but had to go back for more insulators. Best C-note I ever spent. When I originally built the run, I roofed it over, so I have no problems with avian predators. I put the wire at 6 inches, 12 inches, 4 feet, and 6 feet above ground level for diggers or jumpers. Not a single problem since.
P.S.--whoever it is, they will only touch the wire once, then go look somewhere else for an easier meal. The controller puts out a high voltage low amp current. It also "pulses" the current many times per second, so you don't freeze to the wire. Because of the pulse, it is non-lethal, but nobody comes back for a second try.