Yes, you got 6 because there is a discount

Towards the end of the workday, after Cathy left the shop. You went to Julie. "Julie, I have something to ask you."

"Yes, dear?"

"Umm... well, my sister said since I'm already working here in La Senza, I should get some panties."

"Sure, no problem. You are entitled to 30% staff discount. Just for you."

“Thank you, Julie.”

“You’re most certainly welcome. Who are the panties for? Do you need bra to go with them?”

“Umm… they are for me. My sister suggested me to get some since I work here.”

“Really?” Julie raised her eyebrow. “How did you feel about wearing a skirt yesterday?”

“It felt weird but still manageable.”

“Be honest.”

“Honestly, I didn’t want to initially. But when the customer came in and they were less hostile, it kind of feel satisfied that they treated me as an equal.”

“So you’re saying you rather be treated like a girl while working here.” Julie raised her eyebrow again.

“Yes boss, yesterday was unlike those days where I was wearing male clothes. I did not get any awkward stare from customer, which feel kind of comforting.”

“I’m not sure if I should be glad you’re thinking that way but I guess that would help you with this job. Anyway, take your pick. Buy 5 and you’ll get the sixth one free.”

You take your pick at 6 of the more traditional panties in various colours and head towards the counter. As promised, Julie gave you a pretty generous staff discount. You paid for the items and left in a hurry back home.