How much does this cost to the nearest dollar?

Nissin MF18 for Canon Macro Ring Flash - Professional Flash - User Friendly Controls - Auto/TTL/Manual Modes
COMPATIBLE with CANON and USER FRIENDLY INTERFACE - The MF18’s intuitive and bright color LCD display features large, easy to read numerical values that are easy to read, even in bright daylight A POWERFUL RING FLASH - With a guide number of 16 (m) the MF18 delivers the power to achieve maximum depth of field for close-up nature photography and dental photography, i.e. f/32 with 100mm macro lenses PRECISE POWER CONTROL - The MF18 offers Manual power from 1/1 to 1/64 in 1/3 EV steps, Fine Macro power from 1/128 to 1/1024 in

Price is $500.00
Price: $499.95