My bet is that Shanks/Luffy Memories will settle between 9000 and 12000 @ Manda. IK Young Whitebeard started at 16.000 in YJA and a few days later started to show up in Mandarake at around 12.000, then went down to 9k and stayed there. Same with the Senior version of IK Whitebeard. Hisoka IK started at 10.000 in YJA, then moved to 5k @ Manda. Gon started at 8k, then moved to 3k/4k.
Also, for those interested, Ace IK and Roger IK memories are around 8000 at the moment. The other ones will be terribly cheap since theyre so small (6cm).
Hmm, I do think you're right about this. 1Up, let us know pricing on the Shanks & Luffy set, I'll most likely go with you on this one (though when you get them off taobao they don't come with a box or anything, I don't think). I'll keep my eyes peeled for that Ace, but after a while the Ace in chains IK has dropped so low, 6000Y-ish. The mini busts I see on YAJ for only 600Y buy it now.
edit: Looking on YAJ, it appears that they didn't go with the Japanese word for 'memories' but instead are doing it in English? Odd. ワンピース 一番くじ メモリーズ (シャンクス ルフィ)<– So search that 'One Piece Ichiban kuji Memories (Shanks Luffy)
Hope that helps anyone looking...