Here are 2 ways to looks at EDP and ECNL. This is assuming that you have aspirations to play in college
Xfire is $4,500 and that's it, unless you want to travel as a parent. Travel expenses are covered. Also includes a 1 week summer residential camp at Camp Casey. Team and club fundraising is required. Don't know much about WPFC fees.
XFire plays in front of all top college coaches in the country(90% of G90(they played in the Red Bull League), G91(100%) and G92(90%) girls got scholarships to colleges) A local kid was identified at an ECNL tournament as a National team prospect and invited to National team camp(twice)

EDP costs are now $2,000 if you go to regional camp. Add that to $2,500 for team fees and $1000-2000 for out of state club team travel and you get to $5,500-$6,500(maybe add more to that at U16 and 17 because these are important years)
Ask a college coach where he goes to recruit and he will tell you that because of limited resources, they go to state championships and ECNL tournaments. Don't go to too many showcases any more.
My DD played at Crossfire, never could crack the ODP line up, even after many attempts, and as a freshman, was a starting center back at a large D1 school(That did quite well last year). But couldn't make the ODP team.

I think that I have my extreme bias clear.
Just wanted to add my 2 cents