Post any notable ebay auctions in this thread.
The Topps Allen & Ginter Cryptocurrency cards have been very popular on ebay. The 1/1 Blank back card sold for nearly $2,500 USD. Here’s some of the most interesting recent sales:
https://www.ebay.com.au/itm/2018-Allen-Ginter-Cryptocurrency-83-MINI-Gold-bordered-exclusive/123326993721?hash=item1cb6dc9539:g:vH4AAOSwnrJbfehD
https://www.ebay.com.au/itm/2018-Topps-Allen-Ginter-Cryptocurrency-Gold-Border-Mini-Card-Sealed-Pack/362420710728?hash=item5461f52d48:g:sFEAAOSwiSJbf1-C
Another interesting sale from the Allen & Ginter madness, $500 USD for the #37 poster:
Casascius 2011 1BTC redeemed: $470 USD BIN
MS68 Titan BTC 0.1 sold for $2,500 USD. Seems quite high, maybe the rare jungle green slabs are increasing the value?
The Magenta printing plate from the Allen & Ginter Cards sold for more than $3,400 USD, crazy.
Some graded cards making it to ebay and selling for quite a bit:
PSA 10 Silver Glossy: $1,499USD
Red 5/5 Sold for $2,700USD
Mini Black auctioned for $300USD
PSA 10 Brooklyn Back sold for $6,500
Several Black mini’s have sold for $600usd++
This “interesting” piece went for $175USD
A large collection of redeemed Casascius coins went for $1000 USD. Pretty good deal if you ask me.
That one of a kind dogecoin is part of my collection now 
Might sell it one day, who knows. However it’s a great piece and probably won’t let it go unless I get a HUUUGE offer for it
An ungraded Black Mini sold BIN for $199USD. Pretty good deal considering how much some others have gone for.
These card prices seem to be coming down a bit, not a bad time to start/fill out your collections.
Black mini auctioned for $449
https://www.ebay.com/itm/2018-Topps-Allen-amp-Ginter-X-Black-Mini-Cryptocurrency-83-PWCC-/401769042639?hash=item5d8b4d12cf%3Ag%3AhBMAAOSwfx5c3z8z&nma=true&si=TVQEuZowJnh%252FETS%252Fl4S1qpEm4cQ%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
There are a couple of PSA 10 mini A&G backs for $74 which I think is a pretty good deal
This PSA10 Mini sold for $35 which is a crazy good deal imo
PSA10 Full sized black auctioned for $76
Stamps stamps stamps! eBay has gone mad for the first crypto themed stamp from austria
Full sets have gone for as much as $999USD
https://www.ebay.com/itm/FIRST-CRYPTO-STAMP-complete-set-of-5-all-color-editions-Ethereum-MINT-/254263564350?_trksid=p2047675.m43663.l10137&nordt=true&rt=nc&orig_cvip=true
Some sets of 4 (excluding the rare red) have sold for $700USD
https://www.ebay.com/itm/FIRST-Crypto-Stamp-YELLOW-BLUE-GREEN-BLACK-ethereum-stamp-AUSTRIAN-POST-/264377103273?hash=item3d8e1a73a9%3Ag%3At10AAOSwUYpdEN7v&nma=true&si=uYmalwI%252FWFupv2Zpgev%252BwGSAcZg%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
Individual yellow stamps have gone for as much as $350 usd
https://www.ebay.com/itm/CRYPTO-STAMP-YELLOW-Edition-ltd-10k-WORLDWIDE-Ethereum-NEW-UNUSED-/133096660854?_trksid=p2047675.m43663.l10137&nordt=true&rt=nc&orig_cvip=true
You can see more sold stamps here: Crypto Stamp for sale | eBay
A peeled Casacius 25 BTC sold at auction for US$1700
Nice starter set of Cryptoimperator HODL and a couple of Satoricoins sold at auction for US $455
A couple of ICG Graded MS69 Cryptoimperator sold BIN for US$499
https://www.ebay.com/itm/2014-ICG-MS69-CryptoImperator-0-01-Physical-BTC-Token-Like-Casascius-Lealana-/233300301843?hash=item3651c81813%3Ag%3ANckAAOSwMxhdP5fk&nma=true&si=EhGOKoKSzi%252FoDlWJxg56%252BaOZfO0%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
4 digit stamps are going for a hefty premium.
A&G Black mini’s are coming down, one auctioned for $356
BIN Price: US $499.99
https://www.ebay.com/itm/2013-CASASCIUS-0-5-BTC-Brass-Physical-Bit-Coin-Token-ICG-MS64-Peeled-Unfunded/233416564400?hash=item3658b61eb0:g:BJYAAOSwzb5d3sqC
BIN Price: US $699.99
https://www.ebay.com/itm/RARE-Casascius-Bit-coin-2011-1-BTC/202876411363?hash=item2f3c605de3:g:UaQAAOSwltVeG8e-
Auction: US $247.50
https://www.ebay.com/itm/Bitcoin-Suisse-Certificate-LOT-Of-3-BTC-BCH-BSV-Wallet-Like-Casascius-Lealana/223839614526?hash=item341de1763e:g:hgEAAOSwcf1d1ljd
BIN: US $1,799.99
https://www.ebay.com/itm/2013-LEALANA-0-1-BTC-Brass-Physical-Bit-Coin-Token-ANACS-MS69-FUNDED-Casascius/233417913327?hash=item3658cab3ef:g:AKMAAOSwP45d4Jtg
Auction: US $619.00
The only (so far) PSA 10 Black Mini sold for $1k+