Principles 3, 4, 5 and 6 put you in a position to execute your liquidation strategy. Understanding your market and what they want on a per card basis, not worrying about the perception of a card being cheap or expensive, but simply knowing it's liquidity level and buying at the right price puts you in a great position.

Someone I personally know who spends a ridiculous amount of money on cards recently told me in the same breath that it's hardest to move a card over $1k for more than a 10% profit, and it's better to buy $50-$250 cards to try to move them for a 50%-200% profit, but that he WON'T do the latter because it doesn't "move his needle."

That makes NO SENSE! You don't need to buy expensive cards to be a high roller. In fact, I'd argue that staying in your lane and moving quickly can add up much quicker than trying to mess around with high dollar cards on the time. 5-figure and 6-figure cards prevent you from executing Principle #1, which is one of the most important ways to be a successful high roller.

If you don't have an exit strategy and aren't willing to liquidate, you're risking being a collector/hoarder and not making any money. Just make sure you're ready to move out of cards and know that when you do, there's only really a 30% chance of significant profit on any one card. You're going to break even 50% of the time, lose 20%, but that remaining 30% will yield more than enough profit margin to keep you in the game and give you overall profitability across the board.

The reason I'm pounding this home is because if you look at each card in a vacuum and only sell when you're up significantly, you'll be left holding the bag 70% of the time, which will be to your detriment. Again, this goes to Principle 1, move in and out and trust the process.

Principle #3

Understand what the market wants, especially when that means your gut feelings, predictions and opinions don't matter. Learn to love what the market loves.

Principle #4

You don't have to buy expensive cards to be a high roller. High rollers can and should deal in lower dollar cards, as they're easier to move in and out of.

Principle #5

Higher dollar cards are harder to move in and out of, making it hard to execute a strategy for Principle #1.

Principle #6

Only Buy low. Why? Because you can. You're the one spending the money. Buying low is the key to being a high roller, because Buying Low is Building In Your Profit Margin so you can make moves without worrying about market factors.