These car window tinting film sets are instore at Lidl from Monday 14/04/14 for £4.99 which seems reasonable enough, not sure how easy they are to fit though.
Product Information :-
Complete set for rear screen and rear side windows
Increases privacy and reduces headlight glare in rearview mirror whilst filtering 95-100% of UV and protecting interior from excessive heat
Self-adhesive and easy to fit, includes cutter and smoother
- Rear film: 75 x 152
- Side film: 50 x 250