Some States have programs that can help either cover some or all of the
costs of bear fences or provide no-interest loans for the purchase, if
you can show a bear problem. You might want to check with your State
Dept. of Ag..

As an aside.  A beekeeper pollinating a blueberry field got tired of
bears damaging his equipment here in Maine. He set his hive up in the
bed of his truck and powered a fence around the truck from the truck
batteries. The next day he found the bear made it past the fence.
Unfortunately, it could not get back out, so was inside the fence with
his truck and the hives. Took a while to get it out.

Bill Truesdell
Bath, ME