Cheapest Theme Park

I am planning on going to Japan with my boyfriend and going to it is already so~ expensive! We are still deciding what to do outside of Tokyo area... But I know I REALLY want to go to a theme park for the Ferris Wheel!

Please help!

Which Theme park is the cheapest?
I mainly want to go for the Ferris Wheel because I've never gone in one that's super big that you are enclosed on you're way up. But want it to be worth the tickest cost for all the other rides.

Any suggestions on what would be best next to Tokyo?

Please! Some one tell me if the sanrio puroland is worth the money because I LOVE Hello Kitty and I want to try going to this as well as finding a Hello Kitty Cafe
~~ Can Anyone tell me where that is? If there is one... All I know is that there's a few and I am only aware of the one in Seoul.

Visit Yokohama Cosmo World. There is a large ferris wheel called "Cosmo Lock 21" with 800 Yen per person. Cosmo Lock 21 is still one of largest ferris wheel in the world.
http://www.senyo.co.jp/cosmo/attraction/001.html
http://www.yokohamajapan.com/things-to-do/yokohama-cosmoworld/

Sanrio Puroland worth visiting if you love Sanrio and Hello Kitty.
http://www.puroland.co.jp/english/

Sanrio Puroland
http://www.puroland.co.jp/english/food.html
http://www.puroland.co.jp/english/access.html
Ferris wheel
\ 700, are large in size Kasai Seaside Park.
http://www.jnto.go.jp/eng/location/spot/gardens/kasairinkaikoen.html
http://www.timeout.jp/en/tokyo/venue/180/Kasai-Rinkai-Park
Yomiuri Land
Admission \ 1200, \ 600 Ferris wheel
http://www.yomiuriland.com/english/ # Attractions
Seibuen Amusement
Admission \ 1100, \ 600 Ferris wheel, there is also a fairy tale Sanrio Town.
Ferris wheel does not open until 7/11.
http://www.seibuen-yuuenchi.jp/index.html
http://www.seibuen-yuuenchi.jp/attraction_n/melhen.html
http://www.sunnypages.jp/travel_guide/tokyo_leisure/amusement_parks/Se...
My Melody cafe to open in Shibuya Parco 7/18-8/31.
http://www.parco-art.com/web/other/exhibition.php?id=670
THE GUEST cafe & diner
(Shibuya Parco Part 1.7 F)

The most famous in the theme park of Japan is Tokyo Disney Resort. However, there is no Ferris wheel there.
Some ferris wheels are installed in the amusement park from a long time ago, but they are a small thing. That large type have been installed near the public park and shopping mall in many cases.
Large Ferris wheels around Tokyo are as follows.
Flower and Diamond ferris wheel:
It is in the Kasai Seaside Park. The fee is 700 yen. It is a Ferris wheel of Japan's largest.
http://en.wikipedia.org/wiki/Diamond_and_Flower_Ferris_Wheel
Palette Town Ferris wheel:
It is located in Odaiba. The fee is 920 yen.
http://www.sunnypages.jp/travel_guide/tokyo_entertainment/night_view_s...
Big O:
It is located in Tokyo Dome City Attractions.
The fee is 820 yen.
Yomiuri Land Ferris wheel:
It is in the amusement park, located in Inagi-city Tokyo.
http://www.yomiuriland.com/english/
Cosmo Clock 21:
It is located within the Yokohama Cosmo World. The fee is 800 yen.
http://en.japantravel.com/view/huge-ferris-wheel-in-yokohama-minato-mi...

If you like Hello Kitty, you would be a good choice to go to Puroland. I have never been there, but it is known that there is a very popular for people like Kitty.
If you go to the Sanrio shop before you go there, it would be able to purchase discount ticket at 3,000 yen.
http://www.sanrio.co.jp/english/store/
Sanrio Puroland
http://www.puroland.co.jp/english/access.html

Hello Kitty cafe in Japan is operating in Yokohama. However, the style of the store is quite different from that in Seoul.
Character goods are not placed there, Kitty is hidden in the decoration and interior.
http://r.gnavi.co.jp/gdam900/lang/en/

Thank you so so so much for all of your helpful answers! All I have to do now is find out where I want to go! ♥u♥)v

I've gone to Cosmo Clock 21 in Yokohama before and it's well worth it. The one in Palette Town in Odaiba is also really big and I guess the views are very nice from the top too. As stated by others, you don't need to go into an amusement park to enjoy those :)

Disney may be the most famous, but it's sure not Japanese....