So maybe where my confusion starts is with the paypal semantics.
My early understanding of paypal (having never set it up before...other clients have used authorize.net) was/is:
1) Paypal Pro is $30/month and fully functional with powerstore 2
2) Paypal Express was a free version with confirmation and return to site functionality with powerstore 2 that allows customers with or without a paypal account to pay with a credit card.
3) Paypal Standard was a free version that does not have any kind of functionality with powerstore 2, no email confirmation from powerstore 2, no return to site, and the customer must have a paypal account.
Paypal's site is very confusing. After trying to dig in and find out where my understanding was off, all I find they also have PayFLOW?, which I am assuming has NO functionality at all with powerstore 2, and that possibly paypal express is actually a part of paypal pro??? and does involve the monthly fee? (then what would be the point of not taking credit card info on the checkout page except that maybe (maybe?) the client won't need to purchase a secure socket layer? And that the ONLY free option is paypal standard which doesn't work at all with powerstore?
Any clarifications anyone can provide is much appreciated.