O. havanensis is generally not available commercially. This animal was collected as a juvenile a year and a half ago off the Florida Keys at 35 meters. I suspect they are locally abundant, but unless divers work open sand plains at depth, they are unlikely to show up. O. latirostirs and O. brevirostris from the Indo-Pacific are more likely to find their way into the trade since they occur a bit more shallow and burrow in areas more typically frequented by collectors.
Aside from their digging ability, the thing that fascinates me most about this species is its speed. It is the fastest swimming stomatopod we have measured topping out at near 1 m/sec. That puts it in the a class with squid.
By the way, if you get a pair, do not keep them together. If tried six times to establish a pair in a 100 gal tank and each time one animal eventually killed the other. They can be really nasty!
Roy