I'll give it a try, but at 100$ your best bet would be auctions. All the good BIN stuff will be gone within hours, while some auctions will fly under the radar.
Have you tried a 40 jacket? Seems it would fit you better, based on the measurements you've given us.
You could send it to Luxire and have them copy it.
I don't know how much you'll save(if anything at all), that really depends on the fabric you want to use.
You'll find the Luxire affiliate thread somewhere on the front page here(forum).
edit: How did you pay, and how much do you want to save?