My first exposure to exotics was the day i picked up my very first beardies from a a guys house, (not the person who had bred the beardies, just the transaction happened at his place) he had a few cornsnakes, boas, a bucket load of natives, but most memorable of all was that he let me feed his chameolean,...that was unbelieveably cool!! a few years later he offered me the chameolean, but by that time i knew it was illegal and if i got busted id lose my beloved natives so i said no.
Second experience was after i 'won' an auction on ebay for a 4 foot mesh lid that was the perfect size for a fish tank i had,...i turned up to the guys house, he invited me in, first thing i saw was a massive enclosure with a boa and 3 leopard geckos (in a different enclosure ofcourse),...i mentioned that it was kinda crazy inviting people in with illegal reptiles in the house, but i wouldnt tell anyone if he let me hold a leopard gecko.
He said most people dont know they're illegal and went on to tell me he worked in a petshop and could get me any exotics i could possibly want. (and ofcourse i got to hold a leopard gecko)
Then a girl i knew bought some red eared sliders for $200 each from a pet shop on the central coast,...
4th experience was a guy offering me a really nice enclosure for $200,...but i could only have it if i took the red tailed boa that was living in it,....
and 5th was another leopard gecko i was offered not so long ago.
Thats in about 11 years of reptile keeping. I dont know if thats alot of exotics encounters or not, but theyre definately out there.