All windows hosting plans at PremiumReseller.com include SQL 2005 and SQL 2008 databases.
Default MSSQL database limit is 300MB Data file & 500MB Transaction log.
Upgrade fee for 1GB Data file & 1GB Transaction log is $10/month per database.
Upgrade fee for 2GB Data file & 2GB Transaction log is $20/month per database.
SQL Profiling service: $10 / 2 Minutes Trace
From control panel, you can easily check database size, run backup & restore database.