Not sure if the specs are the same as the Aldi one (currently at £49.99), but this looks a reasonable price to me, currently 20% off in Play.com. If you don't live near an Aldi, this should be an ideal one. But before you go with this, check if your local B&Q has a cheaper one (only instore) as I understand their prices vary greatly between different branches (between £40 and £105).
* Complete kit with everything you need to receive free-to-air satellite TV
* Includes 60cm dish, receiver, cabling, LNB, compass & meter
* Compass and meter help you achieve pinpoint dish alignment
* Packed in a colour box, with full instructions
Seems like B&Q £40 Satellite kit was a promotional price; it is now back to £105 as I inquired a few branches.