iDeal payments (Netherlands)
For those who want to implement iDeal payments on their Classipress / Appthemes websites:
On a regular Wordpress website I was using the paytium plugin. Mainly because it also sends out correct invoices and can be used with recurring payments.
Paytium also offers a possibility to block content unless paid for access, which makes it possible to grant only those users access to (for example) the final step befre an ad isposted online. It can be used as a payment-gateway which can come in handy when you want to use iDeal for Dutch customers.
Only one thing: you need to know a bit about changing .php files.
I am setting it all up right now on one of my own sites. When done I will post a step by step description here.