AT&T applies a flat $20 discount for fiber internet-only plans and a flat $10 discount for DSL or IPBB plans. This discount times out after the initial 12 months of service, at which point the prevailing rates for services apply. Bear in mind that advertised pricing is before adding the $10 per month WiFi gateway leasing fee, which raises the effective price by $10 on all applicable plans, regardless of the sign-up discount.