As I've been thinking more lately, if I make a guide it will be focused on a budget using mostly gold shop, but I'll include other cheap items like the daily change stuff, sponsor items, and event items. I'm thinking of having a section on how to make your very first avi on a newbie budget of under 10k (since 10k can easily be earned in under 15 minutes of booty grab). And then maybe have sections on how to make progressively more expensive (but still cheap) avis as a newbie earns more gold.
But it is crazy how easy it is to make a nice looking avi for around 10k. The past few days on my old account I was cleaning out my inventory by building decent avis and selling them in the outfit shop. A good number of them were under 10k (even more wound up being almost exactly 11k) and I was working with an even more limited item selection since it was only the items I already owned. Some of the avis weren't as great as they could have been (color matching a little off, appearing like it needed one more accessory, ect) do to the limitations of my item collection, but if I had gone to the gold shops to buy that extra item or two I needed it still would have been super cheap.
I'd probably also explain ways to keep an avi affordable but still make it look good. Possibly even a section on making a dream avi that you can build up over time but have it look complete and attractive even while your questing for the more expensive items.
And the new starter items are really great. Before this account got her trading pass (I happened to make this the same day those items were release), I had to make a cheap avi, so I used those new items and a few others from the cash shop; the whole avi cost under 3k and I quite liked it considering how cheap it was and that it used starter items, but avoided using a full set of anything.