Cheap initial Magazine subscription

dodgy_damo

I'm not sure this is the right part of the forum for this, but here goes!
I've seen a magazine I like with a special offer (3 mags for £3)- what is the trick for getting the cheap magazines and unsubscribing so I don't get stuck paying full whack for the subscription (£17.50 for 6 months)?
Should I sign up and unsubscribe straight away (would I still get the 3 mags?) or wait to receive two mags and then unsubscribe- Thoughts?

Dox

Read the small print and make sure you comply with whatever it stipulates.

dodgy_damo

Dox said:

Read the small print and make sure you comply with whatever it stipulates.

Yeah I've read through it and the main parts are:
"Direct Debit offers: An initial payment for the number of issues specified in the applicable offer will be taken and the subscription will continue at the step-up rate specified, unless you are notified otherwise."

Subscription Cancellations:

*Direct Debit Subscriptions will automatically renew and can be cancelled anytime. Please note, future subscription terms will be cancelled so be sure to contact us 28 days before your next payment is due.
*Should you wish to cancel your subscription, you can do this at any time by contacting us.
I was wondering if anyone had done this themselves and any experiences (Hearst magazines)?