This is amazing. Really, just think about the split testing you could do... you could test conversion rates between B and DD cup polish girls, skirt length, cameltoes and so on.
Real talk!
PS: +rep for being the first to come closest to that whole 'selling Acai door to door' metaphor
PS: from consumer experience... I also agree that the hardest part out of everything isn't even to convert people back at home. There's a couple very big stages of deduction before that... the biggest being
Getting people to take the flyer from your girl's hands! Here I already suppose a good 70%+ of your 'traffic' bails. There's also the people who accept your flyer and then just throw it away 10 footsteps across.... I believe everyone has personally witnessed, at least once in their life, how incredibly littered a street becomes, just a little ahead of wherever a flyer marketeer hangs out.
What I see at big local shopping streets is that marketeers process these trials and signups *on the spot* they make people sign contracts, swipe cards or otherwise authorize the marketer to take cash out of their payment accounts, right there right then! They carry mobile card processing devices, have pre-filled auth contracts, backpack coffee fillers so people can drink a cup of coffee [mixed with ...????] the second they seem likely to pull out their cards... etc.
Also, keep an eye on your timing. Personally I'd say there is a very high chance of having 0 conversions if you don't research timing up to the second. People in 'transit' or 'commuting' mode will NOT direct attention to whatever fashion product...... consider this deeply.
Just laid out my personal experiences as a consumer with these kind of marketers. Hope it helps and allow you to keep scaling Polish Girls! Fucking awesome.