Oh hey! Zone 9 here too. Also do my own care. Except I’m up at tbird this week and paying for grooming/daily training days and YIKES. I love it, but I cannot do it again.
My show bill was $1300 USD (including splits)
Grooming is $800 ($100/day plus tip)
Training is $100/day
Plus travel expenses
Plus whatever the trainer charges for supplies used (poultice, etc).
I usually am completely DIY. I don’t pay splits, etc. so I can get away with spending under $2k at a local show.
*edited to add I have a jumper and typically show in 3 classes, no more than 4.