Figure it out at the register.
Now that you have almost all of the entire sample sale merchandise in your possession, it's time to edit down your options to what you truly need and what you planned to pick up at the sale. Take as much time as you want and try your best to think independently. The cashier will probably chime in with their opinions and try to upsell you, but ultimately it is your decision and your budget so you have the final say.
The best pieces to leave a sample sale with are the coveted pieces of the season, the hottest pieces of last season, clothes you have been eyeing for quite some time, and samples that never went into production. Shop smart and you'll be ready for the sale without stress.