The FAA Rebate program has come to and end. Please reference the FAA's webite for more information. https://www.faa.gov/nextgen/equipadsb/rebate/faq/#q0201

Other discount opportunities include the following:

1. Fleet or multiple aircraft discounts. Many avionics shops will offer significant discounts for multiple aircraft ADS-B upgrade committments. 

2. Avionics vender sales bulletin special pricing. Avionics venders will, from time to time, come out with special pricing on specific equipment or equipment combinations. Sometimes the equipment pricing is tied to certain airframes. Avioncs shops often times pass these special pricing opportunites on to the customer. Special pricing bulletins always have an expiration date for equipment ordering and shipping so be mindful that pricing can change drastically if you do not commit. 

3. Avionics upgrades beyond ADS-B. When performing ADS-B upgrades along side of EFIS, Radio, or other upgrades discounts can be extended due to aircraft access and equipment bundle pricing.