What is a good pump for under $50?

I saw some people post about using a pump first. I have tried twice using trimix was successful once. I am wondering should I go buy a pump and try to pump first.

I am 33 years old and I have ED. I have had this problem over a year due to hemodialysis. I tried viagra and that doesn't work. I started Trimix and the first time it worked wonders. The second time not so lucky. I am scared my wife who is 30 is going to leave me. She has been real supportive, but a...