Here is a summary  updates to the Big Christmas Swap Access & Fees, specifically for 2019 participants who are curious about the 2020 Swaps, compared to 2019.
This assumes they Redeem the Free Gold Upgrade available to them, as outlined in Membership Levels.

2019
Local (USA & Canada) Card Swap (10, 25 or 50 Cards): Free Registration, Open Registration.
Worldwide (10, 25 or 50 Cards): Free Registration, Open Registration.
Local (USA & Canada) Ornament Swap (Matched 1-3 Swappers): Registration Fee for All, Open Registration.
Worldwide Ornaments* (Matched to 1-3 Swappers): Registration Fee for All, Open Registration.
*Due to limited Wordwide sign-ups, not all members were matched Internationally.

We now restrict some Swaps to only Trustworthy Members (Gold Level or Higher) while also offering them Fewer Fees.

2020 Changes from 2019 in Green
Local (USA Only) Card Swap (10, 25 or 50 Cards): Free Registration, (Card limits for Beginners).
Worldwide (10, 25 or 50 Cards): Free Registration (Access; Gold, Diamond & any non-USA).
Local (USA Only) Ornament Swap (1, 2 or 3 Ornaments): Free Registration for Gold and Diamond.
Worldwide Ornaments*: Access for Gold/Diamond and Non-USA. Fee only for USA.
*Guaranteed Worldwide Match in 2020. By limiting USA Members to equal non-USA enrolments. (Priority to Diamond).
+ Premium Swaps: Limited to Gold & Diamond Only. Registration Fees for Gold, None for Diamond.

Our most Frequently Asked Questions about Memberships & Fees: