Couldn't you have asked this in the last thread you made about Reach?
Yeah isn't it odd how his 'Friend' got a credit ban on Halo: Reach right after he made this post. (I mean he did ask what the daily Credit limit was maybe he was asking so he could mod the game so he could easily get the 'Make It Rain' Achievement which
is to make it to Lt. Commander Rank in Halo: Reach)
Maybe his 'Friend is really himself. :D All I can say is Modding isn't the best way to get Achievements dude Hard Work is the only way to get Achievements.
the Best place to ask about Bungie policy is on the official Bungie site and its forums, clearly if you have to ask what the limit is after asking about being banned for reaching that limit clearly shows someone trying to beat the system. Bungie use an automated
system to pick up and detect such...."limit reachers"...if you continue to boost or cheat to farm credits on Halo Reach multiple times, all that will happen is you will be banned from playing online on reach by Bungie and you will have all your credits reset
including all items purchased with spent credits