What is the difference between the ISC Gunners teams that play in PSPL and the ISC Arsenal teams that play in NPSL? Are ISC Gunners and ISC Arsenal the same club? I just wondered because in England, Gunners is a nickname for Arsenal 
ISC Arsenal would be more in line with a "select" program, the cost (per the ISC site) is estimated to range from $800- $1500 for the summer, fall and state cup.
ISC Gunners is a "premier" program, the cost (per the ISC site) is $1650 (for the U9-U10 ages) and $1850 for the U11-U13 ages. That's comparable to the EFC team fees, around $1850 (but does not include the EFC club fee, which adds $900 or so)
I've been monitoring the ISC situation from afar over the past couple years as the Gunner program emerged around 2008. They ran afoul of WSYS when they held tryouts prior to the dates established by WSYS at the time. We can look back and see they were trying to form teams during the weeks before or during State Finals, which made them somehow inelgible for the next years state cup. Lots of discussion on this forum about that (look it up). That committed them to a path with US Club Soccer and thus they proceeded down that path.
It appears that EFC is ticked that the whole pyramid structure (as oppose to a ponzi scheme

) has been messed up. Historically the member clubs of EYSA (Eastside Youth Soccer Association) such as Newport, Mercer Island, Lake Hills, etc. would run rec and select programs leaving the premier program to EFC. ISC is now running all three rec, select and premier programs and giving the soccer community another premier option. Roles have been changed without everyone's agreement. EFC contributed to the situation when they started to field 3 to 4 premier teams per age group instead of just taking the top talent that could fit into one or two teams.
What really seems to be screwed up is the weakness of a select program in certain age groups. There are more premier teams (ISC plus EFC) than select teams (ISC). We seem to have an hourglass type of situation instead of a pyramid. Yes talent seems to be an issue, but I also see it being a money issue. The parents wanted the kids to play on an upper edge team, the clubs are willing to give it to them, just shell out the bucks and we'll call it what you want. Why run a select program for $800 per kid when you can collect $1650?
Here's a count of teams (as best as I could deduce from the websites)
Select
ISC Arsenal G12 - one team
ISC Arsenal G13 - two teams
ISC Arsenal B12 - one team
ISC Arsenal B13- one team
Premier
EFC G12 - four teams
EFC G13 - three teams
EFC B12 - four teams
EFC B13 - three teams
ISC Gunners G12 - two teams
ISC Gunners G13 - two teams
ISC Gunners B12 - two teams
ISC Gunners B13 - two teams