I agree 100% with the arguments that doing high-volume, low-margin modern grade-and-flip is extremely optimized and you will likely lose money or break even at best if you try to do it.
Modern works great for businesses because it has a nearly endless supply of mint condition cards, itâs easily accessible, and PSA is fast. It doesnât matter if you net $1-2 in profit per VSTAR Universe PSA 10 you grade if you can do that 5000 times by clicking âadd to cartâ and âcheckoutâ on cardrush. Itâs time-efficient, repeatable, and it helps that modern has a huge market these days. However, businesses often net $1-2 in profit because they have shipping discounts, eBay fee discounts, PSA dealer rates, etc. They are taking advantage of a plethora of benefits because of their high volume. As a new collector without these advantages, you will not be able to keep up with businesses.
Others are also right that buying raw cards to grade and flip isnât a completely lost cause. As usual, @pfm has it right: you need to find a niche that you can slot in and succeed at, that canât be replicated at scale by large businesses whose goals include the consistent and repeatable profit that modern provides.
On a personal note, I have succeeded in building immense value in my collection over the years by locating and grading higher-value vintage cards. It is volatile, risky, and inconsistent. At times there are no deals to be had. Itâs gotten much harder recently with proliferating scams on Yahoo and the decrease in graded card value, but itâs still possible. Iâve also built value by purchasing raw cards that arenât worth grading at the time, waiting several years for the value to go up, and then grading for a profit. Sometimes it works, sometimes it doesnât. Businesses cant do that at scale because of the inconsistency and the challenge of having capital tied up for an indefinite period of time.
All of my strategy is enabled because I have an actual job that pays me enough money to cover my costs of living with a bit left over for Pokemon. Itâs also highly reliant on the knowledge and skill I have built over 10 years in the hobby. Even then, it can take a long time to build any kind of profit and youâre still at the whims of the larger market.
My personal advice is to keep doing what youâre doing: start small. Learn how to pregrade. Learn how to sell efficiently and effectively. Practice with your store now is absolutely going to help you out in the long run if thatâs what you want to do. However, you should definitely get a âreal jobâ so you donât need to rely on flipping to pay bills.