I bought these to try, since they were part of a guitar order, delivery was free.
Not sure why I didn't expect much from these, but I have been using daddario XL and NYXLs for a few years. Don't get me wrong, the XL and NYXL are excellent strings, but I will now do some bulk ordering of these next time I make a purchase that will allow free shipping. Very very nice strings and they last really well.
Cost prohibitive for me in the UK to just buy a few packets, but a bargain if part of a bigger order.