Grinding shdaowmourne with coins.

Hello guys I'm more of a PvP-er warrior on blackrock I've got myself bis gear but Oathbinder instead of shadowmourne... I got hacked and the shadowmourne quest is ruined for me neither I have the motivation to redo it. I'm asking for help with general tips about grinding coins for shadowmourne. What would be good ways. Level up specific characters to sell cheap on trade or farm gold in some way, Which realm would be better to do it on icecrown or lordaeron.
Did u grind your way to shadowmourne with coins :? how did u do it...

ive done this before but i took advantage of the hype around new 1x realms with both tbc and wotlk. On tbc you could sell gold for ridiculous rates, im talking like a couple thousand gold easily getting you shadowmourne. Super early on? Just hundreds of gold would do it. So i farmed gold in outlands on a bm hunter early; then i even sold the hunter. I sold toons on lordaeron was it? that were fresh 80s for well over 200 coins. You gotta take advantage of fresh realms to get the best coins for your time. Doing so on Icecrown is possible but will be very slow.

Nowadays i have money so i just donate lol

edit: btw if u go this route u will discover there are limits on how many coins you can obtain by trading, it's based on the amount you donated, but it's a multiple of that. IDK what the multiplier is but I hit the limit a few times. I think it's like 5x. So if you bought 20 coins you can obtain 100 through trading. Might be lower or higher tho i am not sure.