It is very cheap... I love Walmarts 10 gallon kits with the tank, lighted hood, and filter for $30!! Filters alone cost me $10-$25!
I want a 5 gallon for just a single fish, and really want this one because oooooo flourescent lighting! ;) I haven't found one I like, so I might just wait awhile. I have my Chard betta coming in at the end of August probably, so I can wait! I think I am stopping at one more. I have to start thinking about the future, and bringing 9 bettas around every where when I move doesn't sound pleasent. What sounds pleasent? A 20 gallon long divided into 3! <3 I guess my community fish and Kaida are staying at my mom's, she's too attached...
Therefore, I think my last one will be very special, and will probably be an AB betta or one that I cannot live without from the pet store. If I find one I adore at the pet store, I will probably do the 20 gallon thing and then do the 5 gallon.
The 20 gallon set up will have very high lighting and fertilizers. All live plants! The dividers will be completely covered in moss so they can't see each other. I will probably use a small sponge filter in each division, just so each gets proper filtration. It'll be a big, costly project, but I will love to see the bettas with such room and with all the live plants thriving under proper lighting!
Each fish will have nearly 7 gallons, and plenty of horizontal space, so this will make me very satisfied and feel comfortable. The 5 gallon (potential) will probably house the smallest, or the more "aggressive" fish that can't handle that setting.
I'm very excited to start my project!