May be a bit specialised but this seems a good deal currently on the Argos clearance. Not many around but worth getting if you have a passing interest in astronomy or want to get the kids involved for not too much money, (was £59.99).
This gets very good reviews even from enthusiasts, just Google it.
Plastic eye cup.
Optimum magnification 15 x.
Maximum magnification 75 x.
Ideal for astronomy.
Includes user manual.
Size (H)38.1, (W)21.6, (D)21.6cm.
Manufacturer's 2 year guarantee.