The ones i have are part of the few females i do cool. I start cooling them in september and start introducing males at the end of october early november. I have has pretty regular production out of them give or take. The sub saharan and voltas have been known to reach weights of 8000 grams. As far as aquiring them. The real big ones usually are spoken for before they even get imported or collected. Some of the smaller ones at around the 4000 gram mark can be bought from guys that import. To get the real big ones you gotta know somebody or get real lucky. Alot of times you can buy a 4000 gram gravid girls as they come in country
From what i have always known is its hit or miss how many or even if they come in each season. I have never seen males.from what ive heard they are all done for the year.