Does anyone know where it is possible to buy leotards, dance shoes and similar items in central Tokyo?
Thanks

Chacott is a good place to look for anything related to dancing. They have shops everywhere and even have a dance studio at their main shop in Shibuya. Check out their website (in Japanese and English): http://www.chacott-jp.com/

There is a shop called Ballerina, located near the entrance to Shirogane Tunnel, about 10 minutes' walk from Meguro JR station. (You can get directions at the koban.) They have clothing, shoes, accessories, and also do custom-order tutus and costumes.

It depends on the studio, or company How much classes will cost:
some range between $50- $250 for a 1 class a week for 1 month.
Most likely the studio you will be at will only cost about $60 or $70 dollars for a single ballet class.

What you will need for a ballet class and cost:

Leotard: $15-35
Tights: $10-25
Ballet slippers: $15-$30
When you get more advanced:
Pointe shoes: $50-85
Pointe shoes toe pads: $7-18

If you are doing recitals, or a ballet, like the nutcracker, then your cstume fee can range anywhere between: $50 and $300 even more depending.

These are more optional items to have:

Wrap skirt or shorts: $10-30
Shrug or wrap sweater: $10-$25
Legwarmers: $7-25
Water bottle: The cheapest one you can find.. $2-10
Dance bag: $15-45

You might also want to have lotion, band aids, snacks,extra tights and other supplies in your bag, which add additional costs.

14 is too late to start if you wnat to become prefessional, But to do it recreationally most defiantly not. You can find a teen beginner ballet class at almost any studio!!

Buy Garden Swings
Garden Football goals
Toys for garden