Amazon offers Prime members Halo 5: Guardians for Xbox One
with free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $4.98.) That's $4 under our mention from three weeks ago and tied as the lowest total price we've seen. (It's also a current best by $3, excluding the below mention.)
A close price: Newegg has a digital code
for $27.99 via coupon code "EMCEJFL65".