Banana wanted to purchase the glue tank for $10, but it turns out that it costs hundreds, thousands, even millions of dollars. However, he opens up "Banana's House of Expen$ive Bargains" in The Treehouse so that he can earn enough money to buy the glue tank.
After he purchases the glue tank, he intends to have fun with it. Later on, he ended up trading his glue tank for Goat that Nasty Cat "purchased". It ended up coming to life, fires her into the air, and thanks Banana for his efforts.