You get what you pay for

For the past couple of years I’ve use this pump. I bought it from performancebike and first off I’d like to say they have been good to work with. I had the pump for two months when the presta head stopped working. I sent it back and they replaced it no questions asked. About a year ago the gauge wouldn’t dip below 10lbs so I sent it back. Now the gauge won’t dip below 40 lbs so I decided to get a new pump instead of sending it back again.