Chaos rising etbs currently make no sense

You can buy a normal etb for £62-£65 and a pokemon center etb costs £75. So for an extra ten quid you get the PC ETB version, which has a stamped fennekin which is worth about £17 sealed, also two extra packs.

The value of normal etb vs PC ETB is just completely out of whack - I feel like the PC ETBs should be £100 or so?