I brought my car in for a downstream O2 sensor replacement, a part which usually will run you between 50 to 100$. To do this procedure all you need to do is undo a 22mm nut and unplug a connector. After 6 hours of my car at Currie tire, they charged me for an hour and a half of labour (147$) and 234$ for the o2 sensor, keep in mind that the OEM Subaru one runs around 80$. All this totalled a whopping 434.26$ after tax. I will make sure to never come back and steer away any new customers.