Q: 1,500gb web space is 1.5gb or 1.5tb 15,000gb transfer - bandtwith is 15gb or 15tb
A: 1,500GB is equal to 1.5TB. 15,000GB transfer would be approximately 15TB. It won't be exact, though, since 1TB is 1024GB, not 1000GB. People get too lazy with their calculations nowadays...