Auto Express is regularly (always?) 6 issues for £1 but the freebies change. Free Meguiars kit (RRP £19.99, currently £17.52 on Amazon – contains shampoo, liquid wax and an applicator pad) seemed worth it for £1 (I don’t think I’ve ever bought car shampoo ‘cos Auto Express are always giving it away).
In my experience Auto Express subs are very easy to stop; just cancel the Direct Debit once they’ve taken £1 from your account (some publishers keep sending the mag and demand payment when you do this, but I’ve never had a problem with Auto Express/Dennis Publishing).
Occasionally there’s even something worth reading in the mag!