Hey Joe, the Sparco seats I bought were shipped Greyhound, so I know what you mean. I'm guessing it will be roughly $150 to ship via Greyhound, plus a trip to the Walmart dumpster to find cardboard.
If you can kick in another $100 I will be willing to go through the hassle of
finding cardboard, etc., burrito-wrapping it, and bringing it to Greyhound.