My recent finds:

Purchased Junko Encase Shoulder Carapace I accept 0 sP! Junko Encase Shoulder Carapace been put in your items.

Purchased Lovely Experiment 0507 Sticker I accept 0 sP! Lovely Experiment 0507 Sticker been put in your items.

Purchased Oobi 3000

I wanted a preview of what items are in the shop now, so I loaded the page then waited a few minutes and clicked on a bunch of items to get the "_____ is sold out" message. Here's the sample:

Gift Horse Plushie is sold out!

Purchased Melody Under the Mistletoe Sticker

Gold Deluxe Boa Feather is sold out!

Purchased Snowflake

Purchased Orange Dyed Red Rreign Beanbag

I don't think that is supposed to work? It should say the item is sold out, rather than the specific item u_u; I get a variety between the 2 messages, but I'm guessing people used to RF the buy page, so it should have been disabled

Catch-up!

Purchased Chewy Vanilla Candy I accept 0 sP! Chewy Vanilla Candy been put in your items. Your main shop discount buff gave you 15% (1,383 sP) off the main price!

I get a combination of "this item has been purchased" and "X is sold out" - sometimes it's a time thing. If it's been awhile, then it's just "item is purchased". Maybe it's 6 minutes then it becomes stale?

Why is this so $$

Purchased Black Cargo Shorts

I accept 0 sP! A Sticker been put in your items.

Purchased Mud-stained Swishy Cloak

Purchased Winter Puff I accept 0 sP! Winter Puff been put in your items. Your main shop discount buff gave you 15% (0 sP) off the main price!

idk pumpky - SL says it's from 2005, so maybe just overall scarcity. xD

Free Shop didn't always give out previous years' Melody items, I think.

Purchased Logger I accept 0 sP! Logger been put in your items. Your main shop discount buff gave you 15% (0 sP) off the main price!

Purchased Super Spongy Beanbag I accept 0 sP! Super Spongy Beanbag been put in your items. Your main shop discount buff gave you 15% (0 sP) off the main price!

Purchased Pink Lace Kerubi Applique I accept 0 sP! Pink Lace Kerubi Applique been put in your items. Your main shop discount buff gave you 15% (1 sP) off the main price!

Good night sweet prince