You can do a free trial, but that is short term.
It will let you know if you want it or not.

After that, there's a shorter subscription.
And a longer subscription.
If you say you were referred by someone else, your subscription is longer for the same price.
And they get some free time too.
The longer subscription is a year, but you get around 13 months if you list someone as the referral.

But Inner Space is a subscription that unless renewed will expire.

I personally think its the best boxing option out there.
And many would agree to that.
But there are a lot of other options to look at.
HKN is free, and it is extremely powerful too.