Monday, January 18, 2021 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9039.95 

Thursday, January 14, 2021 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9199.95 

Monday, January 4, 2021 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9194.95 

Monday, December 14, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9189.95 

Monday, November 30, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9184.95 

Friday, November 27, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $8859.95 

Wednesday, November 25, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from thepixelhub via eBay  was $9279.95 

Monday, November 16, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $8864.95 

Tuesday, November 3, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9079.95 

Monday, November 2, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9084.95 

Monday, October 5, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9089.95 

Thursday, October 1, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from B&H Photo Video  was $10944.01 
from B&H Photo Video  was $10999.00 

Monday, September 28, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9099.95 

Monday, September 21, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9104.95 

Wednesday, August 12, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $8508.41 

Monday, August 3, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $8510.41 

Tuesday, July 14, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $8517.02 
from 6th Ave via eBay  was $8508.85 
from 6th Ave via eBay  was $8517.02 

Monday, July 13, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $8508.85 

Wednesday, July 8, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9051.74 

Friday, April 24, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9029.73 

Sunday, April 19, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from thepixelhub via eBay  was $9249.99 

Monday, April 6, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9031.07 

Sunday, April 5, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9029.54 

Tuesday, February 18, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $8270.47 

Tuesday, February 4, 2020 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $8241.14 

Tuesday, July 16, 2019 
 EF 200400mm f/4L IS USM Extender 1.4x  
from thepixelhub via eBay  was $9269.99 

Monday, July 1, 2019 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9101.35 

Tuesday, June 4, 2019 
 EF 200400mm f/4L IS USM Extender 1.4x  
from thepixelhub via eBay  was $9639.99 

Tuesday, May 14, 2019 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9316.41 

Tuesday, February 12, 2019 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Canon Direct Store  was $11799.00 

Sunday, January 20, 2019 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9260.48 

Sunday, December 16, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10924.00 
from 6th Ave via eBay  was $9185.48 

Saturday, December 15, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10999.00 
from 6th Ave via eBay  was $9260.48 

Saturday, December 8, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10899.00 
from 6th Ave via eBay  was $9160.48 

Friday, December 7, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10999.00 
from 6th Ave via eBay  was $9260.48 

Friday, October 26, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10899.00 
from 6th Ave via eBay  was $9160.48 

Thursday, October 25, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10999.00 
from 6th Ave via eBay  was $9260.48 

Wednesday, October 17, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9690.59 

Friday, September 28, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9590.59 

Thursday, September 27, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from 6th Ave via eBay  was $9690.59 

Wednesday, August 29, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10899.00 
from 6th Ave via eBay  was $9590.59 

Tuesday, August 28, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10999.00 
from 6th Ave via eBay  was $9690.59 

Thursday, August 9, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10899.00 
from 6th Ave via eBay  was $9590.59 

Wednesday, August 8, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10999.00 
from 6th Ave via eBay  was $9690.59 

Wednesday, July 18, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10974.00 

Tuesday, July 17, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10999.00 

Wednesday, July 11, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10899.00 
from Adorama via eBay  was $10899.00 

Tuesday, July 10, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10999.00 
from Adorama via eBay  was $10999.00 

Saturday, June 30, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10899.00 
from Adorama via eBay  was $10899.00 

Friday, June 29, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10999.00 
from Adorama via eBay  was $10999.00 

Wednesday, March 21, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10949.00 
from Adorama via eBay  was $10949.00 

Tuesday, March 20, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from Profeel via eBay  was $10999.00 
from Adorama via eBay  was $10999.00 

Thursday, March 8, 2018 
 EF 200400mm f/4L IS USM Extender 1.4x  
from dealsallyear via eBay  was $9599.99 

Friday, October 6, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from dealsallyear via eBay  was $9199.99 

Sunday, September 17, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from dealsallyear via eBay  was $9399.99 

Friday, July 14, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from BigValueInc via eBay  was $9798.23 
from 6th Ave via eBay  was $9798.12 

Friday, June 9, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from BigValueInc via eBay  was $9260.59 
from 6th Ave via eBay  was $9260.48 

Thursday, May 25, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from BigValueInc via eBay  was $9631.02 
from 6th Ave via eBay  was $9630.91 

Friday, May 12, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from BigValueInc via eBay  was $9638.92 
from 6th Ave via eBay  was $9638.81 

Wednesday, May 10, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from BigValueInc via eBay  was $9405.12 
from 6th Ave via eBay  was $9405.01 
from BigValueInc via eBay  was $9638.92 
from 6th Ave via eBay  was $9638.81 
from BigValueInc via eBay  was $9405.12 
from 6th Ave via eBay  was $9405.01 
from BigValueInc via eBay  was $9638.92 
from 6th Ave via eBay  was $9638.81 

Tuesday, May 9, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from BigValueInc via eBay  was $9405.12 
from 6th Ave via eBay  was $9405.01 
from BigValueInc via eBay  was $9638.92 
from 6th Ave via eBay  was $9638.81 

Monday, May 8, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from BigValueInc via eBay  was $9405.12 
from 6th Ave via eBay  was $9405.01 
from BigValueInc via eBay  was $9638.92 
from 6th Ave via eBay  was $9638.81 

Sunday, May 7, 2017 
 EF 200400mm f/4L IS USM Extender 1.4x  
from BigValueInc via eBay  was $9405.12 
from BigValueInc via eBay  was $9638.92 