I'm an 80 Pally and I'm trying to get my Epic Flyer, but unfortunately I'm not rich

So which Solo-able instance would give me the best gold per time spent in it. Also if you have any tips for gold making, legally, I'd be appreciative to hear them.

Thanks in Advance.

auctioneer addon and play auction house to get gold. its how this one guy got 1 million gold.... other than that bilzz nerfed all the instances of their gold. in kara it used to be 100-150g per boss kill now its only 5-7g. or quest to 85 then do some dailies and you'll get a couple thousand gold by questing to 85... or along those lines.