woah, rs price for just one trs is insane siah. Heh, a bit over the top
cheap and working one, neutrik(china) right angle TRS from hung bros, 3rd level sim lim square.
For TRS, depending on the context of using the trs, if for expression pedal, usually i use the tip for signal send and ring for signal return. Sleeve will still be ground. For instrument using trs, tip and ring will be for the left and right signal(stereo), sleeve as usual, the ground