I have two babies (Cats) and one is regular-sized and my other one is a big girl. We have a cathedral ceiling living room and would like to look into getting a tower prefer not more than $200. I keep finding cat towers that look like for regular-sized cats. Please do not tell me to put her on a diet either (No hurtful, rude, etc. comments tolerated!) Thanks! 
try ebay,petco or petsmart!
Where to find cat tower for large/fat cat?
ceiling
Drs. Foster and Smith have what they call "mega" towers for large, active, or multiple cats. Check out their web site, their cat furniture is actually pretty good quality.
References :
many years of cat rescue (and buying sturdy cat trees)
try ebay,petco or petsmart!
References :