I can share a funny story about these types of sales and parties. I once got an invitation from a sorority sister for a wine gathering. So, of course my hubby and I show up because we love wine and who wouldn't want to drink wine with friends and meet new people?
That lasted for about 30 minutes and then we were asked to sit and listen to this presentation on Meleluca (or whatever). It is a tea tree oil product based company. We left half way through that because we had to pick up the son from soccer practice, but we were also ticked because if we had known it was a sales pitch or whatever, we would not have come. I got online afterwards and researched that and apparently the wine party thing is pretty common for that company. Beware if you get a random invite for a wine party and make sure it is a legit party/gathering not a sales opportunity before you go!