Did you know that the Temur tri-land, Frontier Bivouac, can be had as a quarter uncommon from some retailers and Strike Zone is buylisting them for a quarter? Hmm, if that's not a small spread - that is retail price minus best buylist price - I don't know what is.
Savage Knuckleblade is a 50 cent rare. It buylists for a quarter. It's already shown some growth in Magic Online.
The clan leader Surrak Dragonclaw is a bulk mythic rare and it buylists for about 50 cents. It's a 6 6 for 5 mana and it has flash and gives all your other creatures trample. And none of your creatures can be countered.
Hooded Hydra is another Temur card that's a bulk mythic. It buylists slightly above. And the other major Temur mythic, Sarkhan Unbroken is doing fine at $7 and buylisting at $5. About the only Temur card without a great spread is Rattleclaw Mystic and it was a buy-a-box promo. The cards are really cheap.
It's hard not to be bullish on this archetype, especially if battle for Zendikar has Misty Rainforest, the Green/Blue fetchland, in it. Temur has shown potential online. It's only needing a rotation to see what it can really do.