Well unfortunately all the stores nearby me were out of stock after boxing week, so I had to get
http://www.petsmart.com/product/inde...ductId=4232279
It's 5 gallon, and it is nice, but has no lid

but still seems good. And unfortunately couldn't get my hands on a nice filter, the one I got is so horribly loud that I would rather not turn it on. I also got a heater and moss ball and java fern.
I did also get a ghost shrimp, so right now the situation is that for about twenty minutes my Betta and the shrimp will play and insanely entertaining game of tag, and then my Betta will take a ten minute breather beside the heater, then rinse and repeat (I kind feel left out to be honest). I think I can shove in there one more fish, but will have to decide which one, my Betta is actually very playful and timid, so it should be fine.
Thanks a lot to all of you for suggestions, I shall be buying a better heater and filter in the future according to your suggestions, once the stores restock.

Also if anyone would have any guide on how to care for java fern and what to feed ghost shrimp it would be appreciated (I didn't see the shrimp eat anything the whole day even after all the chases).