The Ergobaby Adapt baby carrier seems to be on a very good price online. These baby carriers can be used from birth onwards and adapts to your baby's size.
Do note that in my research of the product, it doesn't allow carrying of baby facing outwards but do your research and pick what works for you because the price seems great!
P.s. Long time lurker, first time poster, so please be gentle! :)
Edit: Slightly cheaper on ebay due to coupon code
use PIZZA5 for $5 off and eBay Plus for free delivery!
Total $66.87 delivered
Thanks to XeKToReX for this suggestion!