GE heater replacement

The defrost heater in our built in Refrig burnt out . In the past I’ve bought a new heater GE # WR51X0321 for under a $100 and replaced it. The part now comes in a bundle GE # WE49X10021 that cost $260 or so. All sorts of parts I don’t need.

Do you know of a source for the heater only? I wonder if Omega or someone else has a heater that might be a close enough fit?