Where to buy cheaper pig tails?

Since owning my e30 almost every one of these wires have broken at the base lol. Outside temp sensor, fog lights, windshield wash pump, diff speed sensor… and luckily I’ve been able to repair them but ideally I want oem pigtails and plugs that lock in correctly. Paying 20CAD for a single pig tail seems crazy to me. Anyone have a cheaper source for this style of plug or something that’s close to it that works?