They have been on GB selling for $775 (standard model). As this gun is delivered to more suppliers it may drop into the $700+ range. It depends on how long one wants to wait to save a few dollars. I have and one with lasergrips and I find it to be a very well made firearm and being about the same size as a 640 and having one extra round, this was a no brainer for me. I have a few hundred rounds downrange and it now has become my primary carry gun.
My net cost from GB delivered and transferred was almost identical to my 640pro with LG350 grips added.