Do you have yours set to push only for stop or to add $? Yep, it stinks to have to replace that many and see they clip a coupon on every
transaction they should make you a deal if you "trade In" some not too old bad ones.
Not clear from your post.
Were they warrantied the first year?
Is it a total of 10 more over the next six years or 10 in the recent past?
I think it's a cost benefit analysis. i now have 8 bays and 4 vacs with cryptopay and last month which was't a great month they accounted for over $5K. Have had to replace a few over time but I also replace stuff like Vac Motors, etc. regularly.