Hmm .. actually when I found out about Bitcoin it was merely a few thousand I think but I didn't start to trade immediately and took a while to even understand how it works.

If I recall correctly, I found out about BTC when a PTC/GPT had a cashout option as Bitcoins. Then perhaps a couple years down the line, I started trading because the price was constantly going up those days and I had to get it.

I believe it was $7-10k when I actually started trading or just holding those days.