I have extras of certain Legendaries and DWFs on offer to at least clear out some of my boxes for X/Y. The Shinies are much the same really. Here's what I've got:
Gen 1: Articuno x1, Zapdos x1, Moltres x2, Mewtwo x1, Mew x1
Gen 2: Raikou x1, Suicune x1, Ho-Oh x2, Celebi x1
Gen 3: Regirock x2, Regice x1, Registeel x2, Latias x1, Latios x1, Kyogre x1, Rayquaza x1
Gen 4: Uxie x1, Mesprit x1, Azelf x1, Dialga x2, Palkia x1, Giratina x2, Heatran x3, Manaphy x2, Regigigas x2
Gen 5: Tornadus x1, Thundurus x1, Zekrom x1, Reshiram x1, Landorus x1, Meloetta x1
DWFs (these are all bred):
Pichu, Vulpix, Natu, Gligar, Tentacool, Sandshrew, Dratini, Igglybuff, Krabby, Riolu, Smoochum, Poliwag, Croagunk, Slowpoke, Swinub, Shinx.
I can breed almost any other DWF on request. I also have a lot of DWFs in Dream Balls if you're into that sort of thing (they will be cloned though).
These are all what I really want gone. The Legends are doubles I've accumulated over replays of games or extras from trades, DWFs are from extras while breeding for competitive stuff.
As for what I'm looking for:
DWF Beedrill in Dream Ball
DWF Venonat in Dream Ball
DWF Seviper in Dream Ball
Hidden Grotto Herdier (female) OR a female Lillipup (with Dream World ability) bred from that
Hidden Grotto Garbodor (female) OR a female Trubbish (with Dream World ability) bred from that
Hidden Grotto Bouffalant (female) OR a female Bouffalant (with Dream World ability) bred from that
Pokemon with Dream World-only moves (male or female, not too fussy since these can be stupid to get)
If you don't have any of the above, then feel free to offer something and I'll look at it. =)