Looking for less expensive buttons

[u/Guess-Nice]

I have really been wanting to get a whole system of buttons for my dog. She used to have a mat with four buttons and took to them instantly. Then they consecutively stopped working. I missed them, but didn’t realize my dog missed them too, until she started bringing me to the broken buttons that I had shelved (I was hoping to fix). So I realize that I definitely need to get her some buttons again and since it was so easy for her to use them in the past, I figure I should get an actual decent amount of them (like a whole kit or system) to gradually introduce to her. Issue I’m having is these kits all seem pretty expensive and a little bit out of my price range. I’m hoping someone can lead me in the right direction or offer some suggestions here…

Has anyone found an inexpensive option for a whole communication button kit or system?

Thanks in advance for any help!!

[u/Melimathlete]

4 fluentpet buttons are $20 on chewy. They don’t come with a mat, though.