How deep is to deep in the pk4?

[wac]

I was just fooling around today wiht the late pk 4 at delmar and my ticket was 5x2x5x3=150 which to me is a lot of money where one lose and your out. and in this case dixie chatter would have taken me out. Is 150 a normal play for most of you guys on these bets? I see where the payout was over 4k so would gladly trade 150 for 4k any day of the week but i guess i get gun shy and dont see myself ever making a bet like this. Just curious to see what you guys think on this. Do you ever go thru and make your ticket and just say man thats too much or do you just put it in and hope for the best?