TL;DR: As of Nov. 25, the Pokémon TCG Mega Evolution Elite Trainer Box is $79.95 at Amazon, down from $99.99, which is also market value when compared to listings at TCGplayer.
The Mega Evolution Elite Trainer Box is $79.95 at Amazon. That's a really solid deal ahead of Black Friday.
Got an AMEX or Discover card? You could be eligible (see if you qualify) for up to 50% off the ETB by using it to pay for $1 of your order. Then if you get approved for an Amazon Store Card (see if you qualify), you'll get a $60 instant gift card to cover the rest of the order. Simple.
Any of these offers could change at anytime, so this product being anywhere near market value or the discounts and gift card being live when you click through is not guaranteed. Sorry, but this is just how it is with Pokémon at the moment.
Most valuable Mega Evolution Pokémon cards
If you decided against the discount method, well played. In all honesty in can be cheaper to just buy the cards you're after depending on your luck on the day. Here's the top chase cards for Mega Evolution, including links to buy them on TCGplayer now and up-to-date value information:
Mega Gardevoir ex - 187/132
Near Mint Holofoil: $350
Market price: $356.91
Most recent sale: $322.97Mega Lucario ex - 188/132
Near Mint Holofoil: $423.99
Market price: $466.86
Most recent sale: $410Mega Gardevoir ex - 178/132
Near Mint Holofoil: $217
Market price: $206.26
Most recent sale: $193.99Mega Lucario ex - 179/132
Near Mint Holofoil: $193
Market price: $204.16
Most recent sale: $189.99Mega Venusaur ex - 177/132
Near Mint Holofoil: $149
Market price: $155.01
Most recent sale: $149.99