they pop up on ebay from time to time, craigslist would be also a good venue for a used one. Patience will get you something decent. I would also check your local used police car dealerships to see if they will sell you some overstock items
I have a GoRhino, the push bar itself has holes in the side that i am pretty confident you can attach a hook to in case you need to pull the car out of shit. the push bar itself is well made, definitelly not generic ebay stuff, i wouldnt worry too much about damaging it in case you need to push or ger pulled out