How much does this cost to the nearest dollar?

Kantech P20DYE ioProx XSF/26 bit Proximity Card (100 pack)
Typical read range up to 8.50 cm (3.35 in) up to 8.50 cm (3.35 in) P600 up to 48 cm (18.9 in) Card dimensions cm 8.57 x 5.4 x 0.079, in 3.375 x 2.125 x 0.031 Thin, flexible polyvinyl chloride laminate, glossy white on both sides Operating temperature -45°C to 70°C (-50°F to 160°F) Weight 6.80 g (0.24 oz) Card dimensions cm 8.57 x 5.4 x 0.079, in

Price is $500.00
Price: $499.99