Anyway, I don’t know about you, but I’ve learnt a great deal about T1D, US drug pricing, and more. This thread is quite an eye-opener. It’s enough to make one demand a national healthcare system free at the point of use and funded from taxation.
There's a serious misunderstanding of the details here.
1) Walmart insulin (Regular/NPH) does not work the same as prescription insulin (Humalog/Novolog). It cannot be used in insulin pumps and takes careful planning (like eating on a set schedule) to work well.