As per the daily exchange rates provided by the Central Bank of Sri Lanka, the buying price of the dollar has decreased to 308.21 rupees, while the selling price has also seen a decline to 318.06 rupees as of today, February 15.

Here is a breakdown of the buying and selling prices for a US dollar across various commercial banks in Sri Lanka:

People's Bank - Rs. 307.44 (Buying) - Rs. 318.16 (Selling)

Commercial Bank - Rs. 306.99 (Buying) - Rs. 317.00 (Selling)

Hatton National Bank (HNB) - Rs. 309.50 (Buying) - Rs. 317.50 (Selling)

Seylan Bank - Rs. 307.00 (Buying) - Rs. 316.50 (Selling)

DFCC (DFCC) - Rs. 307.00 (Buying) - Rs. 319.00 (Selling)

N.D.B. (NDB) - Rs. 305.00 (Buying) - Rs. 318.00 (Selling)

Amana Bank - Rs. 310.15 (Buying) - Rs. 316.15 (Selling)

Bank of Ceylon - Rs. 309.25 (Buying) - Rs. 317.25 (Selling)