i looked on sirtoys.com and there is only "add to want list" button and no "buy" button with no price too, (I am going to guess that they are sold out) I would love to get them, since I am planning them to be with some other transformer toys i have at home, they would be very enjoyable to play with since they are big

 

Good luck finding them. Also, speaking from experience, the OS Grimlock is kinda fragile. One of the dino feet was broke right outta the box on my copy

 

The huge Grimlock is shit. Mine arrived broken and the seller was never able to get me a replacement. As for the Megatron, keep a watch on ebay for "Taikongzhans" as that's the brand of those enormous KOs.

 

I have Grimlock, and he's very light and the joints are really terrible. The pegs snap off easily, too

 

Wait for the BMB OS KO of Studio Series Grimlock. It'll have quality.