Does the iDEAL module of MarketPress actually work?

I'm browsing the code of the iDEAL (dutch payment system) module for MarketPress, which is called a 'beta' version, but looking at the code it can't work at all: In the confirm_payment_form() function the value of 'order_id' is assigned to variables, but $order_id is never assigned to any variable and since iDEAL is supposed to 'call back' a script, but no 'ipn-ish' script is called, the payment according to me also is never registered... To my simply understanding this is not 'beta' but very 'pre-alpha'...

I'm working on an iDEAL module myself, but 'Buckaroo' based... if anybody is interested in testing it in the next few weeks, I would be most obliged... but you're supposed to have a buckaroo-ideal account, with others it won't work...

And when it's stable... yes, I'm willing to donate it, if the MP guys are interested.