Try Kiddie Campus University. They are on US 41 (just north of the Florida/Nebraska fork) in Lutz. In comparison to most of the daycares in the area, they are pretty inexpensive. I have no idea how much the program is for the summer program or afterschool program. I pay $125/week for my 4 year old to be there all day. They also offer the VPK program which I will be able to utilize in August were I will only pay $80/week for all day.
The teachers there are great and they have a GREAT older kids area with computers, video games, ski ball table, foosball table, basketball games, basketball court, etc. They have my 4 year old (just now 4) reading already!!!!