I wasn't looking at the price, but that is a lot. Amazon isn't necessarily known for their "deals".
I've had miserable luck with NAPA's search. It comes up with totally unrelated items. If I search for "gear oil" with my truck highlighted, it gives me the following:
Timing Gear set
Air Conditioning Flush Solvent - R134a and R12 - 1 qt (guaranteed to fit your vehicle) - It has no AC.

Pitman Arm Shaft Seal - Manual Steering
Air Conditioning Flush Solvent - R134a and R12 - 1 qt (different brand than the above, but for 3+ times the cost).
If I change to universal items, I get 707 items to wade thru.

I had to search by the PN of the product that you posted to find it. Surprisingly, it's in stock, but they didn't have the 90 wt GL-4 I was looking for the other day that the website said was in stock.
Anyway, that's a good find.
