Quick answer
A пу́нкт вы́дачи is a pickup point: you get a code by text and collect the parcel there, often trying it on first.
Ordering
Delivery
If it goes wrong
At the pickup point
Try before you accept
At a Russian пу́нкт вы́дачи there is a fitting cubicle, and you are expected to check the item before accepting it. If it does not fit you simply refuse it on the spot — no return paperwork, no postage. This is why clothes are bought online so freely.
Опла́та при получе́нии
Paying on collection is still common and is called опла́та при получе́нии. It means you only pay for what you actually keep. The alternative, prepaying, is предопла́та and usually comes with a discount.
Typical mistakes
мой посы́лка
моя́ посы́лка
посы́лка is feminine.
Я хочу́ верну́ть де́ньги — meaning return the item
Я хочу́ верну́ть това́р.
Be explicit: the goods or the money.
Check yourself
What is a пу́нкт вы́дачи?