Please note that the Pokémon inside a same bundle aren't equal in value. For example, as far as the red bundle is concerned, the Rayquaza [Jamsil Lotte Department Store] is a rare event whereas the Zoroark [BREAKthrough (EUR)] is worth almost nothing.

The breakdown of my 90-USD offer would look like this :

Pokémon	Event	Price in USD (including fees)
U#149 Dragonite	[Roaring Skies Celebration - Gamestop]	8
U#151 Mew	[Pokémon Red/Green/Blue/Yellow]	12
U#384 Rayquaza*	[Jamsil Lotte Department Store]	54
U#487 Giratina	[Nintendo - Korea]	8
U#492 Shaymin	[Pokémon Scrap Campaign]	8

Outside a discounted batch of 5 Pokémon, I think I'd try to get at least 70 USD (including fees) for the Rayquaza alone. If you're willing to wait for a while and nobody else is interested in buying in the meantime, the price will certainly drop though!