Musica have HDMI to Mini and Micro HDMI cables, HDMI right angle adaptors at R25, their own brand "Stuff" headphones reduced from R150 to R75, and retro bluetooth telephone handsets reduced to R50.
Stuttafords and that fancy shoe place in Cavendish (can't remember the name - same side as Macdonalds) also have decent stuff on sale - belts, shirts, etc. The shoe place usually does a 'buy two pairs, get the cheaper pair free' - you can score good quality stuff
As for Musica! Don't trust 'em
Sold my kid a pair of headphones (he went with his non-tech savvy uncle

) for 1.3k (all his savings) assuring him it works with a PS4 - of course it didn't.
Take back for refund, they show him a pair of certified 4 PS4 cans for R900 - cool - until he walks into BT Games next door and see the same thing for R200 less...
Wasn't a long convo before he walked out clutching his hard-saved cash...