Since you cannot buy VC games directly anymore, a “new” collection implies you have a physical, unscratched Wii Points Card (worth 1,000, 2,000, or 5,000 points) that has never had its code entered. In auctions, these cards alone sell for $200-$500 depending on the artwork. A "complete new collection" means the owner has the physical cards to prove the purchase was legitimate, not via homebrew.
If you claim to have a "New" Complete NTSC-U VC Collection, you must prove you have these specific titles. They are the rarest because they had limited release windows: wii ntscu complete virtual console collection new
The Wii’s internal 512MB NAND can only hold about 100 NES games or 30 N64 games. To have a complete installed collection, you must use an official Nintendo SD Card (2GB or less—SDHC not supported for channel storage). You will need to rotate games using a meticulous spreadsheet, or invest in a vintage 2007-era SD card adapter. Since you cannot buy VC games directly anymore,
The keyword “New” changes everything. In retro digital collecting, “new” can mean three things: If you claim to have a "New" Complete
Because the shop is closed, you cannot browse the store. However, if you have an old NNID (Nintendo Network ID) that previously purchased a game, you can still re-download it from the "Your Downloads" history.
Buy a Wii that was manufactured before 2009. Check the serial number (LU64 or lower). Ensure the warranty sticker is intact on the bottom. This console must have firmware 4.3U or lower. Do not connect it to Wi-Fi yet.