I know for me, Lesley just told me when I could expect it, and it arrived. A lot of jewelers (Leon and MWM are prime examples of this) lead times jut depend on what is in the pipeline already, so the best source on ETA is the vendor themselves.
I sent the wire payment on Feb 23rd. Received confirmation of received payment on the 24th. The ring is scheduled to be completed towards the middle of next week(March 10th?).