beware the guild of "dai gurren team" or something similar, today one member of them: Lexonous or Lexanous asked me 10k to craft me 2 equip items, putting materials, i was aware that it could be a scam but since i encountered only nice people in this game i decided to bet those 10k in a "scammer test", and i lost.
sadly, even here there are scammers. too bad.
be careful when you trade with this guild, don't trust them.
good game to all.
Perhaps it would be best to undertake a complaint with the game staff about the player in question, at the support portal.
http://wiki.spiralknights.com/Support_Portal
Rather then name calling and tarnishing an entire guild as being 'scammers' when only one person if any might be responsible for such things. It could be possible your part of a bigger guild trying to tarnish and undermine smaller newer guilds so that you can gain more market and sale dominance.
But whatever the case maybe, it is far more mature and best to tell the people who run this game itself and keep matters private, then run around crying wolf.
Also for anyone remember the old saying "if its to good to be true"