Card quality listed for my cards is typically accurate. I will always review cards up for trade to verify the quality listed is accurate. If any corrections must be made, I'll update the quality listing and let you know.

< $20 Trade
Envelope and standard shipping.

>= $20 and < $75 Trade
First Class shipping (include tracking) and bubble mailer.

>= $75 Trade
Priority Mail shipping (includes tracking) with insurance and bubble mailer.

I use a combination of TCG Market Price and TCG Median Price for trades calculations.

=== Other Items up for Trade/Sale ===
$320 - Modern Ad Nauseam:
https://www.mtgvault.com/lazernerd/decks/modern-ad-nauseam-4/