Would you buy a cheap treadmill or a gym membership?

I need to start exercising more, and I like the idea of being able to stay in my house to do it... so I can't use bad weather or gas, time or people as excuses...

But home equipment is more expensive, gym membership would be cheaper, but I feel like I'll use that as an excuse.

Also, I've moved to a new location, and don't know the gyms here... I don't even know if the local gym has free parking in the back or only limited metered street parking...

Planet Fitness would be half the price, but twice the distance... and I just don't like all the bright purple... like it's off putting to me for some reason.