I agree with all the posts above, except the part about the guy blindly doing it and getting standups. You can eliminate them if, w/out them you have enough other bids.
I believe I've seen that you were recently hired. I wouldn't worry about it for quite some time. Get through ground school, sims, IOE, and try to have fun doing it.
I finished IOE in August, had heard about BidPro, but didn't worry about it until I could bid (and expect to get) something other than reserve and stand-ups. This month (Feb bids) was the second month I used it and it worked great. I never looked at the bids, not by choice, but I didn't have them. Last month I chose layovers as the most important choice, and got that -- however mostly 6 am and earlier reports. This month chose later show times as the most important and that worked. I'll take the cold and a 4 or 5 hour later show time any day.I'm around 240 or so of 717 fos and got my 60-something choice. I'll take that. Spent 20 minutes on BidPro and that was that. 8 bucks is well worth it, compared to hours and hours of going through the lines and pairings.
Congrats and good luck.