You can get cheapo ones like member BA's recent post which clearly stated "not Apple MFI certificated so do not expect much at this price", or you can go a little bit more for a genuine Made-For-iPhone/iPod/iPad (MFi) certified cable.
New code "F694A155B4" replacing sold-out code "0679B39E2D"
29/1 630pm: New code again "744CDD6BB4 "
High-quality pure copper core cable. Fast charge rated at 2.4 amps. 1-metre length.
Comparable to Banggood's Blitzwolf cables, or the likes of Tronsmart.