Darco Electric Extra Light 25-Pack Bulk Box - Perfect for Home, Office, and Commercial Use

I bought this for my guitar maintenance shop, with the hope of reducing some cost, I always used Ernie Ball, but the value of it caught my attention, 25 sets of Darco strings for the price of 13/14 Ernie Ball strings, it seemed really interesting to be so good. I don't usually leave negative reviews, but in fact this has been a headache, the third one is used and the 1st string always breaks at exactly the same point, now I have 3 sets with breaks, and to save this, I will have to add the 1st string from my old favorite brand Ernie Ball… Improve this, and if it's not too much to ask, send me a bulk of 25 1st strings, I think I'll need it.