The best price recently has been lightning deals at Amazon, where it is offered new for something in the low $300's range. The deals only last a day max, but they have done it about once a month over the last three months.
That's the only "deal" pricing I have seen on the 436. Everyone else, including Amazon, have it at about the same price otherwise.
Mark
536/436/WS1095/HP1/HP2/996T/996XT/996P2/396XT/325P2/PSR800/15X/others