How much does a $10,000 treasury bill cost?

Excuse me, I'm a bit confused about the pricing of treasury bills. Could you please clarify for me? When someone asks "How much does a $10,000 treasury bill cost?", is it implying that the treasury bill is being sold at face value, or could the price vary depending on market conditions? If the latter, what factors would typically influence the price of a treasury bill, and how would one go about determining the current price of a $10,000 treasury bill? Thank you for your time and assistance.