need spare for microwave?

Door release button on my Panosonic Microwave broken.
Trying to buy replacement on website.
Panasonic offer a service number to come and fit.
Seems expensive option for a 5-10 minute job i could fit myself.
ModeL NN-E289B
Tried various spares companies with no luck.
If the model has been updated can anyone let me know a compatible model which will be do the job.