The Energon Pub

Thanks to Seibertron member daimchoc, we're linked to an Amazon special: Spend $25 on Select Transformers, Get $5 Off at Checkout

There is a catch, however... According to the fine print:

Discounts only apply to items sold by Amazon.com and not by a third-party seller.

Which severely limits what's being offered for sale, and quite a few items are Bumblebee.

Still, it's a great deal for those of you missing figures or items on the list, plus they offer the free Super Saver Shipping!