The speculation about the price of the upcoming Sigma 50mm f/1.4 Art series lens will end around April 11, 2014 according to a report at SLRLounge.
I haven't posted the rumors about speculative price, as I have some contacts at the Canadian distributor that have assured me that the final price has not yet been decided. I can't even begin to speculate what it might be, especially since Sigma is claiming it will be competing against the $4000 Zeiss Otus 55 f/1.4. If it performs anywhere near the Zeiss and comes in at around $1000 and has autofocus, Sigma will definitely have another winner.
cr