Hi Man Fai! Welcome to the Disney Parks Moms Panel.
I love that you are planning ahead for your Table-Service meals. I always like to encourage guests to start planning ahead.
Dining reservations can be made starting 190 days in advance of your arrival date. Dining Reservations are highly recommended especially for Character meals.
Unfortunately it is really hard to figure out the exact price of a meal when the website is giving a range for the prices. Pricing for the meals depends on a lot of variables. Often times the variables include days of the week (weekday vs. weekend) and time of year (holidays, peak season such as summer, etc.) My only suggestion to you would be to
contact the Dining Reservation Cast Members. They may have more insight into the exact prices of meals.
If you are staying at the Walt Disney World Resort my other suggestion is to take advantage of the Disney Dining Plan. This is a great way to enjoy dining at Disney without having to worry about budgeting enough money. With the
Disney Dining Plan each member of your travel party will receive one Quick-Service Meal, One Table-Service Meal, and One Snack per person per night of your stay. Each person will also receive a Rapid-Fill Resort Refillable Mug. My family does typically purchase the Disney Dining Plan because I feel that it is a great deal and it also takes the guess work out of making a budget for dining!
I hope that you have an Unforgettable time!
~Heather~