How much does this cost to the nearest dollar?

Harmony Audio Factory Stereo to Aftermarket Radio Antenna Adapter Compatible with Chevy Trailblazer
Application Guide Buick Century 90-05 Century 90-05 Electra 88-90 Electra 88-90 LaCrosse 05-09 LaCrosse 05-09 Allure 05-09 Allure 05-09 Le Sabre 88-99 Le Sabre 88-99 Park Avenue 88-05 Park Avenue 88-05 Rainier 04-07 Rainier 04-07 Reatta 88-91 Reatta 88-91 Regal 88-04 Regal 88-04 Rendevous 02-07 Rendevous 02-07 Riviera 86-99 Riviera 86-

Price is $6.00

Price: $5.99