Nothing wrong with flipping. I work in the public school system and flip to support my affliction...er, the hobby. Proud to say I nickeled and dimed my way into a 1951 Bowman Mantle in SGC 55 free and clear this calendar year and a 1948 Leaf Jackie Robinson in PSA 5 last year. I realize this is off-topic and not pre-war related by there's nothing wrong with buying with the intent to sell, regardless of the turnaround time.