No big deal plecos are the only hobby I have just find them interesting for some reason alway cool to spread the word. And yea its cool that you can sell your fish back because they are worth more money the bigger they get cuz its hard for them to ever get larger sizes from whole salers but it also depends on the breed of fish you have. I sold my common pleco to Aquarium concepts he was way to big for my tank when I bought him from walmart almost 5 years ago he was only about 2 inches when I sold him this past friday he was almost 10 inches i didnt get much 10 bucks but i think I only paid 3 bucks for him so I put that 10 buck to use and bought a Blue Phantom which is one tight ass pleco fucking $64 dollor pleco most money I have spent on a fish but it was worth it looks so sick in my tank.