Power window

My driver side window botton doesnt work properly:I have to really pull it hard to make the connection. Feels like there is a spring that has lost its tension over time (it has over 135000 on it) . I opened it up to see if maybe I can just change the spring but looks like I have to order the whole part. Any suggestions? Its still working. I just have to pull it hard. any suggestions for place i can order the part cheap?

ebay

what is that part called?Do I have to buy the whole assembly?

its called the power window master switch