this is not true54 boe greens is pre patch drops gfed
Can you tell that too all of the 54ilvl greens I have had drop? They might have gotten lost or confused.54ilvl boes are pre bfa drops new 49 boes scale to 52ilvl not that it matters tho
Although farming boe greens can be super RNG, from what I've seen, if you really want to farm them, you have to have to have a lvl 57. Most of the boe greens I've gotten when farming silithus or other places always drop at lvl 41. So i'd imagine that at 57, being 8 levels higher, you'll get lvl 49 drops.
In my experience, the best thing to do is just continually patrol your AH... You never know what you'll find. Now, if you're on a high-pop, twinking realm (like Bleeding Hollow), a lot of times even the 54 greens will be tens of thousands of gold. But even there I know someone who got a scaled https://www.wowhead.com/item=2911/kellers-girdle&bonus=3905 for 5k, which is a great deal. Being on a lower-pop realm, I've gotten three scaled ilvl 58 shields for very cheap (one was 7g...), freezing bands for less than 5k, and ilvl 52-54 greens are usually not more than 1.5k. Plus, since the items have their secondaries randomly assigned, you never know when you'll get one that has an even better stat spread than one you already have. GL!
if i am not wrong, if you use a lvl57 .. you will get an item that is for over lvl50 .. dont use a lvl57, when i need something that is meant for lvl49, i usually farm it using a team, i will use a lvl101 or 120, together with 3 or 4 lvl49s, 1 cloth 1 leather 1 mail 1 plate wearing 49 .. and if something drops, it will not go to waste