I think someplace like Dick's sporting goods would carry jammers. If you are wanting actual tri shorts with the arse pad in them, I don't know if they carry them or not. I'm sure tri tech carry's both. Never been there, but that seems to be the common answer to these threads when I read through them.
Go to dicks and try some suits on. Then go to swim outlet and buy a speedo there. They have great prices. I like the polyester suits. They last forever. I've had the same two suits going on 3 years now and I swim on avg 3x a week.