Two sources of heirloom gear I recently used.
1. Guild rep.
2. Darkmoon Faire.
Guild rep gear costs a little gold, but it's not too bad. If you don't have the required rep, guild rep is super easy to get these days. Use the guild tabard for 100% boost. It was much quicker than using JP/VP (whichever it was).
DMF gear may not be instantly available, but it's not to hard to accumulate tickets for them, especially with several alts working on the Faire (which is how I worked it). Items are around 110 tickets, if I recall correctly. These can be upgraded to level 85, too, for around 45 tickets.
Also, the pieces from guild rep and DMF (I don't recall which has which atm) are complementary, which is nice. It was like head, legs, back from guild and shoulders, chest from DMF...or something like that.