Axel-Breaker-Earl While looking online to purchase one, I would add it to my cart ( on several different Mazda Parts dealers websites) and plug in my Florida zip code, and the shipping on an $83.00 part was $300.00+ to $400.00+.
Question? I think if you order at your local Mazda dealer, you could pick it up there and not pay for shipping. That's what I did for some Mazda parts back in 2011, and then more recently for some knobs for my 2004 Nissan Frontier. The knobs were like under $2 each, and buying online had quite-high shipping costs.
This site says genuine Mazda https://www.ebay.com/itm/134215915677
As to the rear window seal for the B-Series: last year I had a local glass shop install anew rear window into my B2200. Since my B2200 has a garage space, they said they could re-use the rubber seal, and did. That shop also quoted $100 installation if I brought in a used window (which I couldn't obtain then). I wonder if a local glass shop could order a seal for you at less cost.
I've installed two rear windows with help from my daughter, but those were on VW Beetles. We used the trimmer line technique with lube.
