You may get a bigger credit limit if you app online. We applied in store (dunno if it helped that we already had a lawnmower and miter saw in the cart with us
), and only got a $500 limit. It went up to $2k very shortly thereafter, possibly because we spent all $500, possibly because they had time to review our reports and give us a more appropriate line.
It was a weekend, they were busy, and I suspect we may have gotten the 2k right off if we'd applied online... but then we wouldn't have been able to use it that day for the really good sale they had going!
-MsMS