Just to point out the obvious the picture order goes from bottom to top.
In the first picture BAMS agrees on the the Halloween items by typing "kk" and then he accepts which is shown by the second picture.
In the third picture it shows BAMS wanting more but -Death Note- wants the v3 witch was indicated by saying "go" ( it is something I have noticed being said by Koreans), but then BAMS clearly asks for more items and then was given a perm Jack and P e.f before the P e.f was given to BAMS -Death Note- asked if this would be enough "ok" which was replied by "kk" from BAMS meaning he was okay with the items for the v3 which was also indicateed by BAMS saying "then I go and we done". This was just from the pictures for those who didn't understand.
So I think BAMS scammed -Death Note- because in the last picture BAMS said " I go" which they use as I will give you the v3 as it was used before "Attack Bot v3 go" in the trade and both understood it as that way, therefore -Death Note- should receive his v3 and BAMS should be banned for scamming. I hope this is some kind of proof.