I have no idea what an internet comp is but I had a lot of luck with 'normal' comps years ago. I won a holiday; concert tickets, video, LP etc., in separate comps re Star Wars, food, baby clothes, and cleaned up at the toddler club raffle!! My best prize was a major film premier and meeting the starts at the do afterwards.
No luck for years tho except some perfume but hubby took over where I left off and won us �12k on the footie pools. His Dad won double that on spot the ball!!
I think the luck is exhausted now. More people do comps these days so its possibly harder to win, especially as comps in the old days involved a bit of skill too. But you know the saying 'you have to be in it to win it'