How much does MIT xPRO cost?

Excuse me, I'm curious about the pricing structure for MIT xPRO programs. Could you please elaborate on the various costs associated with enrolling in one of their courses? Is there a standard tuition fee, or do costs vary depending on the specific program or course? Additionally, are there any additional expenses that students should be aware of, such as registration fees, textbooks, or technology requirements? I would greatly appreciate a detailed breakdown of the financial aspects involved in pursuing an MIT xPRO program.