I can't speak specifically for LA but if you are playing under 18U I figure no less than 8-900 for 10 tourneys and that is pretty barebones. Since it's LA you won't have indoor winter workouts. That does not take into account any fund raising.
A lot of variables go into determining the tee fees for TB. Age group? How many tournaments? Showcases? If you play tournaments that require overnight hotel stays there is a good chance your travel expenses will exceed your team fees.