Over the next few days people will begin making the 502 Reborn weapons. I've seen an incrase in the price of already on my server since the patch, but I expect to see this price increase, even if only temporarily, as people start burning through Living Steel to make the new weapons.
Each weapon (the 463,476, and 502 combined) takes between 12 and 15 to make. While I'm sure a number of have the weapons as they've gone along, I expect that some are holding onto their in order to craft it all at once. That'll be a nice spike in demand.
Could be worth keeping an eye on over the next few days. If you have a stockpile I think the time to unload is coming up.