Argos do not sell it in store any more, but when they did it had excellent reviews & was £24.99 unless on offer, I thought it's a decent price at £12.99 delivered.
Brand New With a 12 Month Argos Guarantee

There's no end to the fun your kids can have creating their own magic worlds in the Pop 'n' Fun Large Combo Play Tent from Chad Valley. Whether it's a castle in the clouds or a far away spaceship, this play tent provides a great hideout for imaginative play. The two tents and crawl through tunnel can be used separately or linked together.
Promotes physical activity and encourages role-play
Helps develop imaginative play
Quick and easy to assemble - pop up and insert rod
Hours of active fun and adventure
Suitable for indoor and outdoor use.
Folds for storage.
Size H79, W99, D49cm.
Weight 1.48kg.
Self-assembly.
Made of polyester.
For ages 2 years and over.