They work as advertised, fast shipping, great price, no surprises.
Buying Lightning cables from Apple is fine, if you can afford them. Ours are always getting misplaced, lost, etc. Buying off brand cables often means they'll work for a short while then become nonfunctional & worthless. So far our Monoprice cables have proved as reliable as the OEM models but with a far more attractive price. The 90 degree connector on one of the cables I bought is super convenient in certain situations (charging while continuing to use the phone for example). What's not to like here?