FWIW I do think firing up the printers would lead to a disproportionate decrease in price than wed expect if the market was tru collectors only, which is to say the people speculating purely for profit might get scared into cutting their losses (I dont typically think of them as the diamond hand types)
Again, a Side Deck is completely optional and is only really seen in high-level play
The play is simple: identify a seller with multiple cards you actually want, confirm there are recent comparable sales in your language and condition, and open with a polite, concrete offerabout 20% for a same-day close with combined shipping
If you play Assembly Hall just to have a nine-mana way to shuffle your deck, try Soldier of Fortune or Myr Mindservant instead
Maybe try to use a search?
As if that weren't good enough, it can banish all spells and traps from the graveyards to do 200 damage for each card banished