yesi recycle soap bottles, water bottles, juices bottles

Bottles that are organic.

There is no specific collective noun for bottles, in which case, a general collective noun applicable to the circumstances is used; for example a six-pack of bottles, a row of bottles, a collection of bottles, a case of bottles, etc.

Or, having glanced in the trash bin the morning after a party, an embarrassment of bottles.

Because they are 7 more bottles

12.99 bottles.

4.33 wks/mo * 3 bottles/wk = 12.99 bottles

the 8oz is a superfluous detail.