My 3 year old son absolutely loves this collection (2 CDs). He asks for it morning, noon & night, never tiring of singing along to the tracks & dancing around to the various theme tunes. There is a great mixture of songs on the 2 CDs, his only initial disappointment was the lack of Octonauts (I had to try & explain to him that Octonauts didn't exist when the CD was made!).
The cost of the collection is fair I think, as there are 50 tracks on the 2 CDs, which works out at 20p per song. Divide that by the number of times your little one(s) is/are going to listen to the songs, & you'll find yourself thinking it's a bargain!
I know some reviewers have mentioned the slowing down of some tracks, but it isn't that noticeable, & surely the most important listeners are the child(ren) you purchase it for? If they are enjoying it, the slightly altered tempo shouldn't matter, should it???
Warning: These tracks are alarmingly catchy. I find myself humming the likes of "Guess with Jess" on a regular basis (including at my office), with my husband's preferred track being Postman Pat's "Special Delivery Service". Still, if it continues to entertain our son in such a way, it's a small price to pay!