The first time I ordered an amp from Mikhail, it came in bit later (week or two) than the estimated time of delivery he gave me when I ordered the amp. When I subsequently had to send the amp back in for a repair and a minor upgrade, it came back within a month. This was about an year or two ago, though.
I have a custom amp that I ordered sometime late last year that I'm waiting for, though some of the delays were due to my stupidity.