i remember i invest in a gambling site that time when 1btc is around 50usd. the profit is only about 250btc, 1k reserved btc and someone just come in to wipe out the profit and hit on the reserved. i was online that time and i was horrified when i see he keep winning big and bigger. in the end, he won like 320btc.
BTC hasn't been around $50 since
March 2013, which was 3 months before I launched the first gambling site that took public investments.