I've never seen it happen, but admittedly I very rarely shop online... what's RK's prices like? I saw their preorder price for MP19 Smokescreen and I thought it was pretty good -- only about $9 more expensive than Amazon JP. It's certainly below RRP so I think it's a good price. You'd want to avoid playing full RRP for TakaraTOMY MPs though... they're just not worth it.