https://www.bizjournals.com/denver/blog/boosters_bits/2016/02/amazon-sales-tax-collection-begins-in-colorado-but.html
Amazon sales tax collection begins in Colorado, but how much it's collecting remains a mystery : Colorado
https://www.reddit.com/r/Colorado/comments/43x5nf/amazon_sales_tax_collection_begins_in_colorado/
Amazon to Collect Colorado Sales Tax - Avalara
https://www.avalara.com/taxrates/en/blog/2016/01/amazon-to-collect-colorado-sales-tax-february-2016.html
Amazon to collect Colorado sales tax on purchases starting Feb. 1 – The Denver Post
https://www.denverpost.com/2016/01/15/amazon-to-collect-colorado-sales-tax-on-purchases-starting-feb-1/
Amazon.com Help: Help & Customer Service
https://www.amazon.com/gp/help/customer/display.html/ref=hp_left_v4_sib
CML Model Ordinance - Economic Nexus & Marketplace Facilitators | CML
https://www.cml.org/home/advocacy-legal/Members39-Guide-to-Legal-Consulting-Services-and-Amicus-Briefs/cml-model-ordinance---economic-nexus-marketplace-facilitators
Colorado Use Tax : Denver
https://www.reddit.com/r/Denver/comments/40yew5/colorado_use_tax/
Colorado has one of the most complicated sales tax systems in the country-- our tax policy mishmash yields 756 different combinations of sales taxes businesses may be required to collect. : Denver
https://www.reddit.com/r/Denver/comments/6fmt09/colorado_has_one_of_the_most_complicated_sales/
Colorado sales tax - FBA Orders and Customer Service - Amazon Seller Forums
https://sellercentral.amazon.com/forums/t/colorado-sales-tax/451573/11
Colorado sales tax - FBA Orders and Customer Service - Amazon Seller Forums
https://sellercentral.amazon.com/forums/t/colorado-sales-tax/451573/5
Colorado's "Amazon tax" takes effect -- here's what it means
https://www.denverpost.com/2017/07/07/colorados-amazon-tax-law-meaning/
Consumer Use Tax | Department of Revenue - Taxation
https://tax.colorado.gov/consumer-use-tax
Consumer Use Tax | Filing Information | Department of Revenue - Taxation
https://tax.colorado.gov/consumer-use-tax-filing-information
Consumer Use Tax | Frequently Asked Questions | Department of Revenue - Taxation
https://tax.colorado.gov/consumer-use-FAQ
Denver judge temporarily blocks Colorado’s “Amazon tax” law – The Denver Post
https://www.denverpost.com/2014/02/19/denver-judge-temporarily-blocks-colorados-amazon-tax-law/
Marketplace Tax Collection for Colorado FAQ - Amazon Seller Central
https://sellercentral.amazon.com/gp/help/external/LHTNXZHNADQ7Q66
Most People Are Supposed To Pay This Tax. Almost Nobody Actually Pays It. : Planet Money : NPR
https://www.npr.org/sections/money/2013/04/16/177384487/most-people-are-supposed-to-pay-this-tax
Please Help Me Understand State Sales Tax : FulfillmentByAmazon
https://www.reddit.com/r/FulfillmentByAmazon/comments/8vab57/please_help_me_understand_state_sales_tax/
Reporting consumer use tax (to CO) : tax
https://www.reddit.com/r/tax/comments/61w7s2/reporting_consumer_use_tax_to_co/
Solved: Do I need to include online purchases on my tax return if I paid sales tax on all of them at the time of purchase?
https://ttlc.intuit.com/community/taxes/discussion/do-i-need-to-include-online-purchases-on-my-tax-return-if-i-paid-sales-tax-on-all-of-them-at-the/00/631314
What You Need to Know About Colorado's 'Amazon Tax'
https://kool1079.com/colorados-amazon-tax/