Are there any for PPL type stuff that are worthwhile, and costing less than the real thing ?
The FNPTII standard of sim provide the sort if thing you are talking about, cockpit enclosure, instructor terminal at visuals. A common example is the Elite products (
www.flyelite.ch /
www.flyelite.com). They are about £150/hr, but of course no landing fees. I don't think you will get much out of them though unless you are practicing instruments. VFR flying in such things is bit too contrived.