When I first started collecting as a youngster I didn't even know what had been bootlegged let alone the differences between boots and originals. It was pre-internet and pre-bootleg guide days too.
Therefore, I always bought stuff from big name dealers at the time to be sure I was getting originals - the usual suspects, and I won't name them in case it upsets anyone.
I sometimes look back at a few of the records I still have that I bought at the time and there are a few that stick out now as bootlegs - even though they were bought as originals. One that is obvious now is The Royal 5 on Tyler. Still pisses me off as all records were listed as originals.
That said, I have not made my mind up about sellers these days giving all the details of the actual record for sale to allow a knowledgeable buyer to see what is being sold is a bootleg (which should not be sold on eBay anyway, which for some will be reason not to say 'bootleg').
Worth comparing to what happens in life when you compare record buying to other areas like buying a holiday, or a house or a car. There's a lot in caveat emptor.
Cheers
Richard