how to dress at level 80?

I play WOW for less than two months, there are two level 80 characters. And here's the question, how to dress a character for heroic dungeons (3,2k GS)? If you dress up at an auction that will be very expensive, farm every day the grass in The Storm Peaks exhausts and does not bring much gold, if you only deal with farming, then 4-3 days will just go to put it on 3.2k GS.
Emblems of triumph in ordinary dungeons can earn 2 pieces per day, so dressing in Dalaran in TI9 set is also impossible

This has been answered many times here.
Do fos and pos normal runs, each boss gives you one emblem of triumph, and they drop ilvl 219 gear, then you'll be able to get into RDF HC in a matter of days and get even more triumph for ilvl245 from Dalaran, then raiding and you're bis.

ToC trinket farms as well, drops 200 ilvl gear as well as few trinkets that are very good.